21-16(1/8x-1)=7(7-2x)

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Solution for 21-16(1/8x-1)=7(7-2x) equation: 



21-16(1/8x-1)=7(7-2x)

We move all terms to the left:

21-16(1/8x-1)-(7(7-2x))=0



Domain of the equation: 8x-1)!=0

x∈R



We add all the numbers together, and all the variables

-16(1/8x-1)-(7(-2x+7))+21=0

We multiply parentheses

-16x-(7(-2x+7))+16+21=0



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

7(-2x+7)

We multiply parentheses

-14x+49

Back to the equation:

-(-14x+49)



We add all the numbers together, and all the variables

-16x-(-14x+49)+37=0

We get rid of parentheses

-16x+14x-49+37=0

We add all the numbers together, and all the variables

-2x-12=0

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

-2x=12

x=12/-2

x=-6

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