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0.25a+0.5=4.50.25a+0.5=4.5
We move all terms to the left:
0.25a+0.5-(4.50.25a+0.5)=0
We add all the numbers together, and all the variables
0.25a-(1.125a+0.5)+0.5=0
We get rid of parentheses
0.25a-1.125a-0.5+0.5=0
We add all the numbers together, and all the variables
-0.875a=0
a=0/-0.875
a=0
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