3x+2.1x=-30.6

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Solution for 3x+2.1x=-30.6 equation: 



3x+2.1x=-30.6

We move all terms to the left:

3x+2.1x-(-30.6)=0

We add all the numbers together, and all the variables

5.1x+30.6=0

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

5.1x=-30.6

x=-30.6/5.1

x=-6+3.5527136788005E-15/5.1

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