Solve the system of equations: x + y = 10 and x - y = 4... – Algebra

Algebramedium · Past Paper

Solve the system of equations: x + y = 10 and x - y = 4.

Ax=7, y=3

Bx=6, y=4

Cx=8, y=2

Dx=5, y=5

✓ Correct Answer: A — x=7, y=3

Adding the two equations gives 2x = 14, so x = 7. Substituting x = 7 into the first equation gives 7 + y = 10, so y = 3.

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