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5+(2.10x)=49.10
We move all terms to the left:
5+(2.10x)-(49.10)=0
We add all the numbers together, and all the variables
(+2.10x)+5-(49.1)=0
We add all the numbers together, and all the variables
(+2.10x)-44.1=0
We get rid of parentheses
2.10x-44.1=0
We move all terms containing x to the left, all other terms to the right
2.10x=44.1
x=44.1/2.10
x=21
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