Question

Solve the system of equations by substitution.

x+y= 0
2x+3y= 3

A. (-3,3)
B. (3,-3)
C. (-1,1)
D. (1,-1)

Answer 1

the answer is Option A) ( -3, 3)

Explanation:

Solve for the first variable in one of the equations, then substitute the result into the other equation.

( -3, 3)

Answer 2

the answer is A.
2 x -3 = -6
3 x 3 = 9
now add those up
-6+9=3