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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