How Do You Solve Linear Equation X-y=3 And X+2y=-6?
Answer:
The two linear equations are;
x - y = 3 --------------(a)
x + 2y = -6 --------------- (b)
From equation (a)
x = Y + 3
Put in equation (b)
y + 3 + 2y = -6
3y + 3 = -6
3y = -6 - 3
3y = -9
Dividing by three on both sides
y = -3
Put value in equation (a)
x -*-3 = 3
x + 3 = 3
x = 3 - 3
x = 0
So; (x, y) = (0, -3)
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