0.1x+0.3x+7=-9

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Solution for 0.1x+0.3x+7=-9 equation: 



0.1x+0.3x+7=-9

We move all terms to the left:

0.1x+0.3x+7-(-9)=0

We add all the numbers together, and all the variables

0.4x+16=0

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

0.4x=-16

x=-16/0.4

x=-40

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