-x-(-1.2x-6.9)=10+2(0.3x-10)

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Solution for -x-(-1.2x-6.9)=10+2(0.3x-10) equation: 



-x-(-1.2x-6.9)=10+2(0.3x-10)

We move all terms to the left:

-x-(-1.2x-6.9)-(10+2(0.3x-10))=0

We add all the numbers together, and all the variables

-1x-(-1.2x-6.9)-(10+2(0.3x-10))=0

We get rid of parentheses

-1x+1.2x-(10+2(0.3x-10))+6.9=0



We calculate terms in parentheses: -(10+2(0.3x-10)), so:

10+2(0.3x-10)

determiningTheFunctionDomain
2(0.3x-10)+10

We multiply parentheses

0x-20+10

We add all the numbers together, and all the variables

x-10

Back to the equation:

-(x-10)



We add all the numbers together, and all the variables

0.2x-(x-10)+6.9=0

We get rid of parentheses

0.2x-x+10+6.9=0

We add all the numbers together, and all the variables

-0.8x+16.9=0

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

-0.8x=-16.9

x=-16.9/-0.8

x=21+0.099999999999998/0.8

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