3.5a+a=180

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Solution for 3.5a+a=180 equation: 



3.5a+a=180

We move all terms to the left:

3.5a+a-(180)=0

We add all the numbers together, and all the variables

4.5a-180=0

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

4.5a=180

a=180/4.5

a=40

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