7+2a+2+5=8+9

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Solution for 7+2a+2+5=8+9 equation: 



7+2a+2+5=8+9

We move all terms to the left:

7+2a+2+5-(8+9)=0

We add all the numbers together, and all the variables

2a+7+2+5-17=0

We add all the numbers together, and all the variables

2a-3=0

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

2a=3

a=3/2

a=1+1/2

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