x+x+3(x+5)=100

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Solution for x+x+3(x+5)=100 equation: 



x+x+3(x+5)=100

We move all terms to the left:

x+x+3(x+5)-(100)=0

We add all the numbers together, and all the variables

2x+3(x+5)-100=0

We multiply parentheses

2x+3x+15-100=0

We add all the numbers together, and all the variables

5x-85=0

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

5x=85

x=85/5

x=17

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