Question

solve: 2x+2/y=7,3x-2/y=13​

Answer 1

Answer:

x=-8, y=-2

Step-by-step explanation:

2x+2/y=7

2x+2=7y

2x-7y+2=0 ------- (1)

and

3x-2/y=13

3x-2=13y

3x-13y-2=0 ---------(2)

multiplying eq (1) by 3 and eq (2) by 2, we get

eq (1) becomes 6x-21y+6 --------(3) &

eq (2) becomes 6x-26y-4=0 -------(4)

Solving eq (3) and (4)

Subtracting, (3)-(4)

5y+10=0

5y=-10

y=-2

putting this in eq (1)

2x-7(-2)+2=0

2x+14+2=0

2x=-16

x=-8

Thus x=-8, and y=-2