Question

Am I on the right track? 2x - y = 8, y = 8 -2x

Answer 1

yess

Answer 2

are you trying to solve for y?
start with 2x-y= 8
add y to both sides
then add -8 to both sides

Answer 3

what is the next step?

Answer 4

2x-y=8
add y to both sides
2x-y+y= 8+y

can you simplify the left hand side?

Answer 5

yeah 2x-2y=8+y

Answer 6

? -y+y = -2y????

Answer 7

oh oops hahaha I thought there were 2 positive y's sorry. No they just cancel out right?

Answer 8

yes

Answer 9

now add -8 to both sides

Answer 10

ok 2x=8+y then it would become 2x=y

Answer 11

now add -8 to BOTH sides

Answer 12

we have to keep things in balance.

Answer 13

sorry sorry. 2x=8+y to 2x-8=y

Answer 14

yes, and you can swap the order 2x-8=y is the same as y= 2x-8 (in case have get a multiple choice)

Answer 15

ok :D thank you!!!! You are a very patient teacher.