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a=0.0-15.0/4.04
We move all terms to the left:
a-(0.0-15.0/4.04)=0
We add all the numbers together, and all the variables
a-(-15.0/4.04)=0
We get rid of parentheses
a+15.0/4.04=0
We multiply all the terms by the denominator
a*4.04+15.0=0
We add all the numbers together, and all the variables
a*4.04+15=0
Wy multiply elements
4.04a+15=0
We move all terms containing a to the left, all other terms to the right
4.04a=-15
a=-15/4.04
a=-3+1/1.40277777778
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