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0.50a-4=3-0.25a
We move all terms to the left:
0.50a-4-(3-0.25a)=0
We add all the numbers together, and all the variables
0.50a-(-0.25a+3)-4=0
We get rid of parentheses
0.50a+0.25a-3-4=0
We add all the numbers together, and all the variables
0.75a-7=0
We move all terms containing a to the left, all other terms to the right
0.75a=7
a=7/0.75
a=9+0.25/0.75
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