7x+21x-10=7(4x+10)

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Solution for 7x+21x-10=7(4x+10) equation: 



7x+21x-10=7(4x+10)

We move all terms to the left:

7x+21x-10-(7(4x+10))=0

We add all the numbers together, and all the variables

28x-(7(4x+10))-10=0



We calculate terms in parentheses: -(7(4x+10)), so:

7(4x+10)

We multiply parentheses

28x+70

Back to the equation:

-(28x+70)



We get rid of parentheses

28x-28x-70-10=0

We add all the numbers together, and all the variables

-80!=0

There is no solution for this equation

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