Question

solve this system of equation.
separate the x- and y- values with a comma.
-4x+9y=42
-14x+6y=-6

Answer 1

Find x from the first equation
x = -(42 - 9y)/4
the substitute it into the second equation and find the value for y. Then go back to the expression for x you got and substitute y. You will find x.

Answer 2

or multiply first equation by 2 second one by -3 to get
\[-8x+18y=84\]
\[42x-18y=18\]
then add to get
\[34x=102\] making
\[x=\frac{102}{34}=3\] may be easier than dealing with all the fractions