Question

Solve the following system of equations:
X+y=2
-2y=-5x+10

Answer 1

A) x+y = 2 --> x=2-y
OK?

Answer 2

now sub 2 - y in for x in the other equation

Answer 3

What do you mean? Can you show me

Answer 4

of course!wait...

Answer 5

\[x = 2-y\]
\[-2y = -5x + 10 --> -2y = -5(2-y) + 10 \]
then:
\[-2y = -10 + y + 10 --> -2y - y = -10 + 10 --> -3y = 0 --> y=0\]

Answer 6

x+y = 2 --> x + 0 = 2 --> x = 2-0 = 2 -->

x = 2

Answer 7

ok?

Answer 8

@Juliettgriffin , did you understand?

Answer 9

Okay thank you!!

Answer 10

Your Welcome :)