Mathematics
x = 3 is the solution of the equation
x + 7 = 4
x + 10 = 7
x + 7 = 10
x + 3 = 7
Simple Equations
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Answer
Substitute x = 3 in each equation:
3 + 7 = 10 ≠ 4.
3 + 10 = 13 ≠ 7.
3 + 7 = 10. ✓
3 + 3 = 6 ≠ 7.
Hence, option 3 is the correct option.
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