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(t+42)/3=(t+126)/7
We simplify the equation to the form, which is simple to understand
(t+42)/3=(t+126)/7
Reorder the terms in parentheses
( + 0.333333333333t+14)=(t+126)/7
Remove unnecessary parentheses
+ 0.333333333333t+14=(t+126)/7
Reorder the terms in parentheses
+ 0.333333333333t+14=( + 0.142857142857t+18)
Remove unnecessary parentheses
+ 0.333333333333t+14=0.142857142857t+18
We move all terms containing t to the left and all other terms to the right.
+ 0.333333333333t-0.142857142857t=+18-14
We simplify left and right side of the equation.
+ 0.190476190476t=+4
We divide both sides of the equation by 0.190476190476 to get t.
t=21
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