7(3x+8)=31-4x

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Solution for 7(3x+8)=31-4x equation:


Simplifying
7(3x + 8) = 31 + -4x

Reorder the terms:
7(8 + 3x) = 31 + -4x
(8 * 7 + 3x * 7) = 31 + -4x
(56 + 21x) = 31 + -4x

Solving
56 + 21x = 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.
56 + 21x + 4x = 31 + -4x + 4x

Combine like terms: 21x + 4x = 25x
56 + 25x = 31 + -4x + 4x

Combine like terms: -4x + 4x = 0
56 + 25x = 31 + 0
56 + 25x = 31

Add '-56' to each side of the equation.
56 + -56 + 25x = 31 + -56

Combine like terms: 56 + -56 = 0
0 + 25x = 31 + -56
25x = 31 + -56

Combine like terms: 31 + -56 = -25
25x = -25

Divide each side by '25'.
x = -1

Simplifying
x = -1

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