-1200+45a=-1800+60

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Solution for -1200+45a=-1800+60 equation: 



-1200+45a=-1800+60

We move all terms to the left:

-1200+45a-(-1800+60)=0

We add all the numbers together, and all the variables

45a-1200-(-1740)=0

We add all the numbers together, and all the variables

45a+540=0

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

45a=-540

a=-540/45

a=-12

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