3(3x+7)=4x+31

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Solution for 3(3x+7)=4x+31 equation:


Simplifying
3(3x + 7) = 4x + 31

Reorder the terms:
3(7 + 3x) = 4x + 31
(7 * 3 + 3x * 3) = 4x + 31
(21 + 9x) = 4x + 31

Reorder the terms:
21 + 9x = 31 + 4x

Solving
21 + 9x = 31 + 4x

Solving for variable 'x'.

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

Add '-4x' to each side of the equation.
21 + 9x + -4x = 31 + 4x + -4x

Combine like terms: 9x + -4x = 5x
21 + 5x = 31 + 4x + -4x

Combine like terms: 4x + -4x = 0
21 + 5x = 31 + 0
21 + 5x = 31

Add '-21' to each side of the equation.
21 + -21 + 5x = 31 + -21

Combine like terms: 21 + -21 = 0
0 + 5x = 31 + -21
5x = 31 + -21

Combine like terms: 31 + -21 = 10
5x = 10

Divide each side by '5'.
x = 2

Simplifying
x = 2

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