Question 539068
solve the problem. x=7y+7
2x-6y=12


We substitute x=7y+7 into 2x-6y=12


2x-6y=12

2*(7y+7)-6y=12
(2*7y)+(2*7)-6y=12
14y+14-6y=12
14y-6y=12-14
8y=-2
y=-2/8
y=-1/4


Now, substitute y = -1/4 into x=7y+7

x=7y+7

x=7*(-1/4)+7
x = -7/4 + 7
x = -7/4 + 28/4 (because 28/4 is the same as 7, but we need common denominators (4)

x = (-7 + 28)/4
x = (21)/4
x = 21/4


Then, the answers are:


y=-1/4
x = 21/4

Any questions, please ask me.