Question

Can someone help please im confused.

[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

-2y + 10
2y + 10
2y - 10
-2y - 10

Answer 1

Did you isolate x in the second equation?

Answer 2

yes

Answer 3

What did you get?

Answer 4

when i isolated it i got 3y = 2 i did elimination

Answer 5

If you isolate x you should get an equation that says x= something. What did you get?

Answer 6

oh i may see what i did wrong

Answer 7

1. Add 2y to both sides
2. Multiply both sides by -1

Answer 8

ok thanks

Answer 9

yw