Help xD

[leaden cradle]

Jane is 8 years older than her brother. In 12 years time, their total age will be 46. How old is each of them now?

[latent river]

let jane's age = j, her brother's age = b

then you can establish a system of equations in terms of j and b

and solve for each of them

[leaden cradle]

Whole equation pls

[latent river]

so

$j=b+8$, $(j+12)+(b+12)=46$

[inland haven]

The Impostor

[latent river]

you should be able to understand these two equations

j=b+8: jane is 8 years older than her brother

(j+12)+(b+12)=46: after 12 years, jane's age plus her brother's age is 46

[leaden cradle]

2x + 8 - 8 = 46

2x = 38

X = 19

[high slate]

doesnt +8 and -8 just cancel out?

[leaden cradle]

Mhm

Then 2x = 38

X = 19

[high slate]

how is it 38

how did it decrease from 46 to 38

[leaden cradle]

46 - 8

Cuz u wanna cancel out + 8 - 8

You balance equation

[high slate]

the answer is 15 and 7

[leaden cradle]

Read da wuestion

[leaden cradle]

Yeah

[high slate]

ok

[latent river]

so there u go, j=15 and b=7

[leaden cradle]

Ight

[latent river]

.solved

[pure flicker]

Solved

Post marked as solved by @latent river.

Use .unsolved if this was a mistake.

[leaden cradle]

Hold up

[leaden cradle]

Can you just continue whole thing from here

.unsolved

[pure flicker]

Unsolved

Post marked as unsolved by @leaden cradle.

Use .solved to mark as solved.

[leaden cradle]

.solved

[pure flicker]

Solved

Post marked as solved by @leaden cradle.

Use .unsolved if this was a mistake.

[leaden cradle]

@latent river

[true glacier]

So you understand these two equations right? @leaden cradle

[leaden cradle]

Lol no

[latent river]

.

[true glacier]

ok so

[latent river]

@leaden cradle

[leaden cradle]

Mhm

[latent river]

j=b+8: jane is 8 years older than her brother
(j+12)+(b+12)=46: after 12 years, jane's age plus her brother's age is 46

[leaden cradle]

Just type the whole thing xd

[true glacier]

j = b+8 got this right

[latent river]

got it now?

[true glacier]

so you are doubtful abt the second one right

[latent river]

after twelve years: each of them's age needs to be increased by 12

[leaden cradle]

Yes

[latent river]

so thats why j+12 + b+12

and the sum is 46

so j+12+b+12=46

[true glacier]

and their sum is 46

yeah

[latent river]

and jane is 8 years older than her brother -> j = b+8

[leaden cradle]

j+12+b+12=46

[latent river]

so thats the two equations

[leaden cradle]

Continue

[true glacier]

you know j = b + 8

[latent river]

two equations are sufficient to solve for both of those

j=b+8, j+12+b+12=46

[true glacier]

apply it in the second equation

instead of j in the second equation, you can write it in terms of "b"

[leaden cradle]

(B+8) + 12 + (b + 12)

[true glacier]

yes

which is equal to 46

[leaden cradle]

2b + 8 + 12 + 12 = 46

2b + 32 - 32 = 46 - 32

2b = 14

B = 7

[true glacier]

yes

[leaden cradle]

Wow

[true glacier]

now apply it back in j = b+8

to find j

[leaden cradle]

Damn shit

[true glacier]

and ure done

[leaden cradle]

Thx alot man

[latent river]

np :)

[leaden cradle]

9th grade so

Lol

[latent river]

haha

[true glacier]

im 9th grade too lol

[latent river]

im 7th

[true glacier]

bro what

are u serious

[leaden cradle]

LOL

[leaden cradle]

Fbi open up

[latent river]

yee

💀

[true glacier]

my god u seem to answer many questions that is greater than your age level

nice man

[latent river]

thanks

[leaden cradle]

x3+y3+z3=k, with k being all the numbers from one to 100

@latent river