3(7x-3)=31-x

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Solution for 3(7x-3)=31-x equation:


Simplifying
3(7x + -3) = 31 + -1x

Reorder the terms:
3(-3 + 7x) = 31 + -1x
(-3 * 3 + 7x * 3) = 31 + -1x
(-9 + 21x) = 31 + -1x

Solving
-9 + 21x = 31 + -1x

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add 'x' to each side of the equation.
-9 + 21x + x = 31 + -1x + x

Combine like terms: 21x + x = 22x
-9 + 22x = 31 + -1x + x

Combine like terms: -1x + x = 0
-9 + 22x = 31 + 0
-9 + 22x = 31

Add '9' to each side of the equation.
-9 + 9 + 22x = 31 + 9

Combine like terms: -9 + 9 = 0
0 + 22x = 31 + 9
22x = 31 + 9

Combine like terms: 31 + 9 = 40
22x = 40

Divide each side by '22'.
x = 1.818181818

Simplifying
x = 1.818181818

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