9t+20=7t-12

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Solution for 9t+20=7t-12 equation: 



9t+20=7t-12

We move all terms to the left:

9t+20-(7t-12)=0

We get rid of parentheses

9t-7t+12+20=0

We add all the numbers together, and all the variables

2t+32=0

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

2t=-32

t=-32/2

t=-16

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