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3.5+0.95a=13-0.3a
We move all terms to the left:
3.5+0.95a-(13-0.3a)=0
We add all the numbers together, and all the variables
0.95a-(-0.3a+13)+3.5=0
We get rid of parentheses
0.95a+0.3a-13+3.5=0
We add all the numbers together, and all the variables
1.25a-9.5=0
We move all terms containing a to the left, all other terms to the right
1.25a=9.5
a=9.5/1.25
a=7+0.75/1.25
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