3x+45=100-2x

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Solution for 3x+45=100-2x equation: 



3x+45=100-2x

We move all terms to the left:

3x+45-(100-2x)=0

We add all the numbers together, and all the variables

3x-(-2x+100)+45=0

We get rid of parentheses

3x+2x-100+45=0

We add all the numbers together, and all the variables

5x-55=0

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

5x=55

x=55/5

x=11

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