Question

What is the solution to the system of equations y=-3x- 2 and 5x+3y=15

Answer 1

hello : 
y=-3x- 2 ...(1) 
5x+3y=15...(2) 
subsct in (2) :  5x +3(-3x-2) =15
5x-9x-6 = 15
-4x = 21
x = -21/4
y = -3(-21/4)-2 .....calculate