Question

following pairs of equations 5x+7y=66 and 2x-3y=-20

Answer 1

Step-by-step explanation:

5x + 7y=66.........(1)

2x + 3y= -20..........(2)

(1)X 2 = 10x + 14y=132

(2)X 5 = 10x + 15y= -100

_______________

0 + y = 32

y = 32

substituting y=32, in equation (2).....

2x + 3y = -20

2x + 3 X 32 = -20

2x + 96 = -20

2x = -20-96

2x= -116

X = -58