Question

**Please Help, for an online Exam** what expression would you substitute into the first equation? 3x + y = 8 -x - 2y = -10

Answer 1

Write it more clearly please

Answer 2

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 3

A. -2y + 10

B. 2y + 10

C. 2y - 10

D. -2y - 10

Answer 4

multiply the bottom equation by -1, mins 2y from both sides and then substitute the equation into the top one.

Answer 5

x=10-2y

Subing in:
3(10-2y)+y=8 => y= 22/5 if my maths is right so x= 6/5

Answer 6

So, is the answer D?

Answer 7

no the answer is a

Answer 8

Okay, THANK YOU SM!

Answer 9

your welcome :)