Solve the following equations 4x - 3 = 3x + y = x - y...

Mathematics

JAMB 1983

Solve the following equations 4x - 3 = 3x + y = x - y = 3, 3x + y = 2y + 5x - 12

A. x = 5, y = 2
B. x = 2, y = 5
C. x = 5, y = -2
D. x = -2, y = -5
E. x = -5, y = -2

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Correct Answer: Option A

Explanation

4x - 3 = 3x + y = x - y = 3.......(i)

3x + y = 2y + 5x - 12.........(ii)

eqn(ii) + eqn(i) 3x = 15

x = 5

substitute for x in equation (i)

5 - y = 3

y = 2

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Solve the following equations 4x - 3 = 3x + y = x - y...

Correct Answer: Option A

Explanation

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