Enter the number that can replace $^{'} x^{'}$ in the following equation:
$12 \times 35 = 12 \times x - 12 \times 15$
50

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Solution

The correct option is A 50
Given, $12 \times 35 = 12 \times x - 12 \times 15$
Using distributive property of multiplication over subtraction we have,
$12 \times 35 = 12 \times (x - 15)$
$35 = (x - 15) x = 35 + 15 = 50$

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