840=150+0.12(a-1250)

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Solution for 840=150+0.12(a-1250) equation:



840=150+0.12(a-1250)
We move all terms to the left:
840-(150+0.12(a-1250))=0
We calculate terms in parentheses: -(150+0.12(a-1250)), so:
150+0.12(a-1250)
determiningTheFunctionDomain 0.12(a-1250)+150
We multiply parentheses
0.12a-150+150
We add all the numbers together, and all the variables
0.12a
Back to the equation:
-(0.12a)
We add all the numbers together, and all the variables
-(+0.12a)+840=0
We get rid of parentheses
-0.12a+840=0
We move all terms containing a to the left, all other terms to the right
-0.12a=-840
a=-840/-0.12
a=+7000

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