7t+3t+20=90

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Solution for 7t+3t+20=90 equation: 



7t+3t+20=90

We move all terms to the left:

7t+3t+20-(90)=0

We add all the numbers together, and all the variables

10t-70=0

We move all terms containing t to the left, all other terms to the right

10t=70

t=70/10

t=7

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