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250=2a*1.5
We move all terms to the left:
250-(2a*1.5)=0
We add all the numbers together, and all the variables
-(+2a*1.5)+250=0
We get rid of parentheses
-2a*1.5+250=0
Wy multiply elements
-3a+250=0
We move all terms containing a to the left, all other terms to the right
-3a=-250
a=-250/-3
a=83+1/3
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