Mathematics for IGCSE & O level - Equations (Section 1 - No. 9) | ExamPlay

Mathematics for IGCSE & O level - Equations (Section 1 - No. 9)

Solve the system of equations: 3x + y = 4; 2x - y = 6.

x=2, y=-2

x=2, y=-1

x=1, y=1

x=0, y=4

설명

Add equations: 5x=10. x=2. Substitute into 3*2+y=4, y=-2.

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