84x+7=6x-9

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Solution for 84x+7=6x-9 equation: 



84x+7=6x-9

We move all terms to the left:

84x+7-(6x-9)=0

We get rid of parentheses

84x-6x+9+7=0

We add all the numbers together, and all the variables

78x+16=0

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

78x=-16

x=-16/78

x=-8/39

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