28=15+(7-2x)

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Solution for 28=15+(7-2x) equation: 



28=15+(7-2x)

We move all terms to the left:

28-(15+(7-2x))=0

We add all the numbers together, and all the variables

-(15+(-2x+7))+28=0



We calculate terms in parentheses: -(15+(-2x+7)), so:

15+(-2x+7)

determiningTheFunctionDomain
(-2x+7)+15

We get rid of parentheses

-2x+7+15

We add all the numbers together, and all the variables

-2x+22

Back to the equation:

-(-2x+22)



We get rid of parentheses

2x-22+28=0

We add all the numbers together, and all the variables

2x+6=0

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

2x=-6

x=-6/2

x=-3

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