How do you solve $28.5 + 18x = 16.5 + 20x$ ?

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Answer 1 · 2016-10-27T19:35:05

You add and/or subtract the same from both sides until you get the $x$ 's on one side and the numbers on the other.

Subtract $18x$ from both sides:
$28.5+cancel(18x)-cancel(18x)=16.5+20x-18x$

Subtract $16.5$ from both sides:
$28.5-16.5=cancel16.5-cancel16.5+(20-18)x$
$12=2x->x=12/2=6$

How do you solve 28.5 + 18x = 16.5 + 20x28.5 + 18x = 16.5 + 20x?