X=4.2(2x-1)+5x+7

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Solution for X=4.2(2x-1)+5x+7 equation: 



X=4.2(2X-1)+5X+7

We move all terms to the left:

X-(4.2(2X-1)+5X+7)=0



We calculate terms in parentheses: -(4.2(2X-1)+5X+7), so:

4.2(2X-1)+5X+7

We add all the numbers together, and all the variables

5X+4.2(2X-1)+7

We multiply parentheses

5X+8.4X-4.2+7

We add all the numbers together, and all the variables

13.4X+2.8

Back to the equation:

-(13.4X+2.8)



We get rid of parentheses

X-13.4X-2.8=0

We add all the numbers together, and all the variables

-12.4X-2.8=0

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

-12.4X=2.8

X=2.8/-12.4

X=-1/4.4285714285714

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