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2=5-4a
We move all terms to the left:
2-(5-4a)=0
We add all the numbers together, and all the variables
-(-4a+5)+2=0
We get rid of parentheses
4a-5+2=0
We add all the numbers together, and all the variables
4a-3=0
We move all terms containing a to the left, all other terms to the right
4a=3
a=3/4
a=3/4
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