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a=1/2*7.3*49
We move all terms to the left:
a-(1/2*7.3*49)=0
We add all the numbers together, and all the variables
a-(+1/2*7.3*49)=0
We get rid of parentheses
a-1/2*7.3*49=0
We multiply all the terms by the denominator
a*2*7.3*49-1=0
Wy multiply elements
715.4a*7-1=0
We move all terms containing a to the left, all other terms to the right
715.4a*7=1
a=1/1
a=1
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