Question

Solve for x and y: x-3y = 0, x+2y = 20​

Answer 1

Answer:

x-3y-x-2y=-20

Step-by-step explanation:

-5y=-20

y=4

x=12

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Answer 2

Let x- 3y=0 be equation 1

and x+ 2y=20 be 2

subtract both the equation we get,

-5y =20

y =-4

substitute it in equation 1 we get,

x-3(-4) =0

x+12= 0

therefore x= -12