(x-0.7x)-3=(x-0.4x)-18

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Solution for (x-0.7x)-3=(x-0.4x)-18 equation: 



(x-0.7x)-3=(x-0.4x)-18

We move all terms to the left:

(x-0.7x)-3-((x-0.4x)-18)=0

We add all the numbers together, and all the variables

(+0.3x)-((+0.6x)-18)-3=0

We get rid of parentheses

0.3x-((+0.6x)-18)-3=0



We calculate terms in parentheses: -((+0.6x)-18), so:

(+0.6x)-18

We get rid of parentheses

0.6x-18

Back to the equation:

-(0.6x-18)



We get rid of parentheses

0.3x-0.6x+18-3=0

We add all the numbers together, and all the variables

-0.3x+15=0

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

-0.3x=-15

x=-15/-0.3

x=+50

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