Question

need help solving these system of equations
x-4y=33
4x+7y=-6

Answer 1

so we need to solve for a variable, and to do that we should use substitution

Answer 2

start with the top equation

Answer 3

x-4y=33
-4y=33-x
y=-33-x/4

Answer 4

then substitute that y value into the second equation, to solve for x

Answer 5

return to the first equation and use that x to solve for y

Answer 6

I noticed you only put -4
is it written out like this x-x-4y=33

Answer 7

and subtract x from 33

Answer 8

-(33-x/4)

Answer 9

\[-\frac{ 33-x }{ 4 }\]

Answer 10

I kept writing it but thought I had it wrong

Answer 11

mind your negatives

Answer 12

thats the most frequent mistake

Answer 13

yea that's what I always have a problem with

Answer 14

can you feel your algebra muscles working ^^)