45+x=100-x

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Solution for 45+x=100-x equation: 



45+x=100-x

We move all terms to the left:

45+x-(100-x)=0

We add all the numbers together, and all the variables

x-(-1x+100)+45=0

We get rid of parentheses

x+1x-100+45=0

We add all the numbers together, and all the variables

2x-55=0

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

2x=55

x=55/2

x=27+1/2

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