3.9x+9=1.9x+19

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Solution for 3.9x+9=1.9x+19 equation: 



3.9x+9=1.9x+19

We move all terms to the left:

3.9x+9-(1.9x+19)=0

We get rid of parentheses

3.9x-1.9x-19+9=0

We add all the numbers together, and all the variables

2x-10=0

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

2x=10

x=10/2

x=5

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