145=a+72

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Solution for 145=a+72 equation: 



145=a+72

We move all terms to the left:

145-(a+72)=0

We get rid of parentheses

-a-72+145=0

We add all the numbers together, and all the variables

-1a+73=0

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

-a=-73

a=-73/-1

a=+73

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