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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

Explicação

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

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