Question

Solve the simultaneous equations

X-Y=-1
2X-Y=0

Answer 1

Answer: X = 1, Y = 2

Explanation:

X - Y = -1

X = Y - 1

2(Y - 1) - Y = 0

2Y - 2 - Y = 0

Y - 2 = 0

Y = 2

X - (2) = -1

X - 2 = -1

X = 2 - 1

X = 1