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a/7=-4.5
We move all terms to the left:
a/7-(-4.5)=0
We add all the numbers together, and all the variables
a/7+4.5=0
We multiply all the terms by the denominator
a+(4.5)*7=0
We add all the numbers together, and all the variables
a+31.5=0
We move all terms containing a to the left, all other terms to the right
a=-31.5
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