Question

solve the equation
8x + 5y -3 =0
3x + 5y = 12
28x - 35y = -7
​

Answer 1

Answer:

x = -5

y = 27/5

Step-by-step explanation:

solved by subtracting 8x + 5y - 3 = 0 by 3x + 5y = 12

Answer 2

Answer: 33x-35y=-16

                       or

    33x-35y+16=0

Step-by-step explanation:

First add up 8x+5y-3=0 & 3x+5y-12=0

which gives 5x+9=0 (by changing signs)

Now add up 28x-35y+7=0 & 5x+9=0

which gives 33x-35y+16=0