Question

[6.02] For the following system, if you isolated x in the second equation to use the Substitution Method, what expression would you substitute into the first equation?3x + y = 8 -x - 2y = -10

Answer 1

Hint: Isolate x in the second equation

Answer 2

so -2y-10

Answer 3

Sorry, but you didn't isolate x properly. Try again.

Answer 4

? is that right

Answer 5

-x - 2y = -10
-(x+2y) = -10
x + 2y = 10
x = 10 - 2y