3x=(10.5-x)4

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Solution for 3x=(10.5-x)4 equation: 



3x=(10.5-x)4

We move all terms to the left:

3x-((10.5-x)4)=0

We add all the numbers together, and all the variables

3x-((-1x+10.5)4)=0



We calculate terms in parentheses: -((-1x+10.5)4), so:

(-1x+10.5)4

We multiply parentheses

-4x+42

Back to the equation:

-(-4x+42)



We get rid of parentheses

3x+4x-42=0

We add all the numbers together, and all the variables

7x-42=0

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

7x=42

x=42/7

x=6

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