What is 2x=y-10

x+7=y

x = - 3

y = 4

Step-by-step explanation:

first i plug y=x+7 for y on 2x=y-10

this makes it 2x=x+7-10

then i solve 7-10 to get 2x=x-3

i subtract - x from both sides to get x=-3

so i plug in x=-3 to x+7=y to get - 3+7=y which makes y=4