Question

7+=35
$7 \times \frac{x}{2} = 35$
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Answer 1

$7 \times \frac{x}{2} = 35 \\ \frac{7x}{2} = 35 \\ 7x = 35 \times 2 \\ 7x = 70 \\ x = \frac{70}{7} \\ x = 10$