7(.9)+x=57

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Solution for 7(.9)+x=57 equation: 



7(.9)+x=57

We move all terms to the left:

7(.9)+x-(57)=0

determiningTheFunctionDomain
x-57+7(.9)=0

We add all the numbers together, and all the variables

x-57+7(0.9)=0

We add all the numbers together, and all the variables

x-50.7=0

We move all terms containing x to the left, all other terms to the right

x=50.7

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