0.5a-1=-15

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Solution for 0.5a-1=-15 equation: 



0.5a-1=-15

We move all terms to the left:

0.5a-1-(-15)=0

We add all the numbers together, and all the variables

0.5a+14=0

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

0.5a=-14

a=-14/0.5

a=-28

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