Question

X = 3y
3x - 5y = 12
substitution

Answer 1

x = 9 y = 3 (9,3)

Explanation:

3x - 5y = 12

3(3y) - 5y = 12

9y - 5y = 12

4y = 12

4y/4 = 12/4

y = 3

x = 3(3)

x = 9

CHECK:

3(9) - 5(3) = 12

27 - 15 = 12

12 = 12