Question

HELP!!
Use substitution to solve the system
x − 5y = −27 (1)
7x − 6y = −15 (2)
a) Find the value of y. (Answer with −100
if there is no solution.)

Answer 1

x=5y-27

7(5y-27)-6y=-15
35y-189-6y=-15
29y=174
y=6

x=5(6)-27
x=3

(3,6) is the point that satisfies your system.

Answer 2

Thanks