X+(x+3)=21.25

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Solution for X+(x+3)=21.25 equation: 



X+(X+3)=21.25

We move all terms to the left:

X+(X+3)-(21.25)=0

We add all the numbers together, and all the variables

X+(X+3)-21.25=0

We get rid of parentheses

X+X+3-21.25=0

We add all the numbers together, and all the variables

2X-18.25=0

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

2X=18.25

X=18.25/2

X=9+0.25/2

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