-1-3x+7x=31

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Solution for -1-3x+7x=31 equation: 


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

Combine like terms: -3x + 7x = 4x
-1 + 4x = 31

Solving
-1 + 4x = 31

Solving for variable 'x'.

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

Add '1' to each side of the equation.
-1 + 1 + 4x = 31 + 1

Combine like terms: -1 + 1 = 0
0 + 4x = 31 + 1
4x = 31 + 1

Combine like terms: 31 + 1 = 32
4x = 32

Divide each side by '4'.
x = 8

Simplifying
x = 8

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