7+5a=-18

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Solution for 7+5a=-18 equation: 



7+5a=-18

We move all terms to the left:

7+5a-(-18)=0

We add all the numbers together, and all the variables

5a+25=0

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

5a=-25

a=-25/5

a=-5

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