2x*18=21(5+x)

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Solution for 2x*18=21(5+x) equation: 



2x*18=21(5+x)

We move all terms to the left:

2x*18-(21(5+x))=0

We add all the numbers together, and all the variables

2x*18-(21(x+5))=0

Wy multiply elements

36x-(21(x+5))=0



We calculate terms in parentheses: -(21(x+5)), so:

21(x+5)

We multiply parentheses

21x+105

Back to the equation:

-(21x+105)



We get rid of parentheses

36x-21x-105=0

We add all the numbers together, and all the variables

15x-105=0

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

15x=105

x=105/15

x=7

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