Question

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Answer 1

Hi there! The answer is x = 6

$6(2x - 11) + 15 = 21$
First get rid of the parentheses (by multiplying)

$6 \times 2x - 6 \times 11 + 15 = 21$
$12x - 66 + 15 = 21$

Then collect the terms
$12x - 51 = 21$

Next, we add 51 to both sides of the equation.
$12x = 72$

Finally divide both sides of the equation by 12.
$x = 72 \div 12 = 6$

Therefore, the answer is x = 6