Question

Please help please really need help please

Answer 1

x = 1

y = -2

Explanation:

5x - 2y = 9 -----------(I)

2x + 7y = -12 --------------(II)

Multiply (I) by 7 35x - 14y = 63

Multiply (II) by 2 4x + 14y = - 24 {Now add and thus y will be eliminated}

39x = 39

x = 39/39

x = 1

Plugin x = 1 in equation(I)

5*1 - 2y = 9

5 -2y = 9

-2y = 9 -5

-2y = 4

y = 4/-2

y = -2