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2t+3t=-5+-2

We move all terms to the left:

2t+3t-(-5+-2)=0

We add all the numbers together, and all the variables

2t+3t-(-7)=0

We add all the numbers together, and all the variables

5t+7=0

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

5t=-7

t=-7/5

t=-1+2/5

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