4x – 4 = x + (17 – 4x)
<=>
4x – 4 = -3x + 17
...
how did we know to subtract 4xx from x when in this:
x = 3x – (12 – x)
<=>
x = 4x – 12
....
Here we added x to 3x
#How do we know that we have to subtract in this equation?
hot cipher
void cradleBOT
supple hearth
4x – 4 = x + (17 – 4x)
<=>
4x – 4 = -3x + 17
...
how did we know to subtract 4x...
$(1.) \ 4x - 4 = x + (17 - 4x) \ (2.) \ 4x - 4 = x + 17 - 4x \ (3.) \ 4x - 4 = 17 - 3x \ (4.) \ 7x = 21 \ (5.) \ x = 3 \$ Which serial number did you not understand?
vivid stumpBOT
UnexpectedTaco
hot cipher
$(1.) \ 4x - 4 = x + (17 - 4x) \\ (2.) \ 4x - 4 = x + 17 - 4x \\ (3.) \ 4x - 4 =...
In step 2, how did you know to subtract x with 3x on the right side? in the second equation i mentioned we for some reason needed to add the x instead of subtracting
supple hearth
ok lemme explain what I did:
step 1. the equation
step 2. open the brackets
step 3. simplify the right hand side by combining like temrs (x - 4x) into -3x
step 4. moving x to one side, numbers to one side (adding 3x on both sides and 4 on both sides to do them)
step 5. divide by 7 on both sides
hot cipher
ok lemme explain what I did:
step 1. the equation
step 2. open the brackets
step...
this makes sense but why is it that you in this other equation would simplify this by adding x to 3 thus making 4x?
x = 3x – (12 – x)
<=>
x = 4x – 12
like how do you know when to subtract and when to add when combining the like terms
supple hearth
this makes sense but why is it that you in this other equation would simplify th...
Open out the brackets:
3x -(12 - x) = 3x - 12 + x = 4x - 12
$-(12-x) = -12 + x$
vivid stumpBOT
UnexpectedTaco
hot cipher
Open out the brackets:
3x -(12 - x) = 3x - 12 + x = 4x - 12
now im even more confused lol, which equation is this? the first or second one i started mentioned in my original post
supple hearth
this makes sense but why is it that you in this other equation would simplify th...
this one from here
hot cipher
this one from here
but why wouldn't this give
x=3x-x -12
<=>
x=2x -12?
supple hearth
-(12-x) = -(12) - (-x) = -12 + x [two negatives make a positive]
hot cipher
-(12-x) = -(12) - (-x) = -12 **+** x [two negatives make a positive]
any videos that can explain it? i think ill start listening to someone explain it now lol
really appreciate your help
hot cipher
https://www.youtube.com/watch?v=63oU-AIzTcE
Thanks man
void cradleBOT
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