-7t+8=-9t

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Solution for -7t+8=-9t equation: 



-7t+8=-9t

We move all terms to the left:

-7t+8-(-9t)=0

We get rid of parentheses

-7t+9t+8=0

We add all the numbers together, and all the variables

2t+8=0

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

2t=-8

t=-8/2

t=-4

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