0.4*(5+2x)-12=0.9x+2.1

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Solution for 0.4*(5+2x)-12=0.9x+2.1 equation: 



0.4(5+2x)-12=0.9x+2.1

We move all terms to the left:

0.4(5+2x)-12-(0.9x+2.1)=0

We add all the numbers together, and all the variables

0.4(2x+5)-(0.9x+2.1)-12=0

We multiply parentheses

0.8x-(0.9x+2.1)+2-12=0

We get rid of parentheses

0.8x-0.9x-2.1+2-12=0

We add all the numbers together, and all the variables

-0.1x-12.1=0

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

-0.1x=12.1

x=12.1/-0.1

x=-120+0.1/0.1

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