algebra

[zenith fossil]

i havent done algebra because i missed like 8 months of school and idk how to do it im stuck please help step by step for this question

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[zenith fossil]

please help

[mighty sleet]

oh simultaneous linear eqs

alr, first multiply the first equation by 2

then add whatever you got to the second equation

[zenith fossil]

ok

so i do 3 x 2 and 2 x 15?

@mighty sleet

[mighty sleet]

what

no multiply both sides by 2

do you understand that?

[zenith fossil]

wdym both sides

i got 2 two things

[mighty sleet]

both sides of the = sign

you have 3x + 2y on one side

and 15 on the other

if u multiply both by 2 u get

6x + 4y = 30

[zenith fossil]

just tell me all the steps and i will read them one by one

cuz its confusing

[short violet]

3x + 2y = 15.
10x - 4y = 2.
You can subtract these two and get an another equation.

[mighty sleet]

alr, but make sure to ask if you don't understand

[mighty sleet]

...

[short violet]

Oh, I had no idea you were helping.

Pardon me, I shall get going.

[mighty sleet]

$3x + 2y = 15$

$10x - 4y = 2$

we first divide the second equation by 2 to get

$\frac{10x-4y}{2} = \frac{2}{2}$

$\$

$5x - 2y = 1$

Now we add $3x + 2y = 15$ to what we just got

$5x - 2y + 3x + 2y = 15 + 1$

$8x = 16$

$x = 2$

$y = 4.5$

[left cedar]

No Lifer #GTFOanemia

[zenith fossil]

ok

im gonna try

[mighty sleet]

alr

refer to this if you forget someth

[zenith fossil]

on my calculator 10x-4y devided by 2 gives 8

but on the example it says 2/2

.

[mighty sleet]

what

don't use a calculator

[zenith fossil]

why bro

[mighty sleet]

this is algebra

[zenith fossil]

i need to the teacher will know

well i dont know algebra

i dropped off for so long

[mighty sleet]

calculators aren't made for algebra

they're made for calculations

[zenith fossil]

how does it give 2/2 tho

☠️

i dont underatand

[mighty sleet]

divide both sides by 2?

[zenith fossil]

10 devided by 2 is 5

[mighty sleet]

yeah

[zenith fossil]

why did you put 2

why not 2/5

[mighty sleet]

what

[zenith fossil]

bro

[mighty sleet]

wow there's a lot of work to do here

anyway

look, an equation has 2 sides

[zenith fossil]

yes

[mighty sleet]

one side is on the left hand side of the equal sign

other side on the right side

[zenith fossil]

exactly

[mighty sleet]

so we divide whatever's in both those sides by 2

[zenith fossil]

exactly

and one gives 5😭

[mighty sleet]

so 10x-4y

divide by 2

we gwt

5x-2y

[zenith fossil]

exactly

thats what i said

[mighty sleet]

yee

[zenith fossil]

5 and 2

after what do i do

[mighty sleet]

and on the other side

we have 2

divide by 2

we get 1

so

5x-2y=1

[zenith fossil]

what

were do we have 2

since when 2 was here

bro

why does this look like someon is making stuff up

theres no 2

you had to devide 2

bur

but no spare 2☠️

@short violet can you explain me your methode also

you said something about minus

bro just explain me why did tou devide 2 by 2 if there was only one 2

[zenith fossil]

how did you find y for 4.5 tho

@mighty sleet

[mighty sleet]

oh for that

just put x=2 in any equation

you'll get y=4.5

[zenith fossil]

what

why

[mighty sleet]

ok

5x-2y=1

[zenith fossil]

yes

[mighty sleet]

5(2) - 2y = 1

10 - 2y = 1

10 - 1 = 2y

9 = 2y

4.5 = y

[zenith fossil]

im actually gonna get mad

☠️

nah cuz

how did you find the y

i dont understand that

4.5

+close