Mar 26
Topic : Simultaneous Equation
Problem : Solve 3x -2y = 3 and x = y + 4
Solution :
3x -2y = 3 ——- (1)
x = y + 4 ——- (2)
Use equation (2) in (1) for substitution method
So, 3x -2y = 3
3(y+4) – 2y = 3
3y + 12 – 2y = 3
y + 12 = 3
Subtract 12 from both sides
y = – 9
Substitute y = -9 in equation (2)
x = y + 4
x = -9 + 4
x = - 5
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