7a+3a-5a+20=-75

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Solution for 7a+3a-5a+20=-75 equation: 



7a+3a-5a+20=-75

We move all terms to the left:

7a+3a-5a+20-(-75)=0

We add all the numbers together, and all the variables

5a+95=0

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

5a=-95

a=-95/5

a=-19

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