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a=1/2(4)(61+222)
We move all terms to the left:
a-(1/2(4)(61+222))=0
We add all the numbers together, and all the variables
a-(1/24283)=0
We get rid of parentheses
a-1/24283=0
We multiply all the terms by the denominator
a*24283-1=0
Wy multiply elements
24283a-1=0
We move all terms containing a to the left, all other terms to the right
24283a=1
a=1/24283
a=1/24283
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