algebra 2
posted by briana on .
Use substitution to solve the system
3x + 7y = −3 (1)
7x + y = −53 (2)
Find the value of x.
(part 2 of 2)Find the value of y.

for (2)
y = 7x  53
sub into (1)
3x + 7(7x53) = 3
3x  49x  371 = 3
46x = 368
x = 8
sub that back into y = .... to get y