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Which pair of equations BOTH have $y = 6$ as their solution?

Class 7Checking Solutions by TrialSimple Equations

A $3 y = 12$ and $y + 4 = 10$
B $2 y = 12$ and $y - 4 = 10$
C $y \div 2 = 12$ and $y + 4 = 10$
D $2 y = 12$ and $y + 4 = 10$

Step-by-Step Solution

2 \times 6 = 12

✓ and 6 + 4 = 10 ✓. In each other pair one equation fails: 6 − 4 = 2, 6 ÷ 2 = 3,

3 \times 6 = 18

.

Answer: D)

2 y = 12

and

y + 4 = 10

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