70=x+31-4x+9

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Solution for 70=x+31-4x+9 equation:


Simplifying
70 = x + 31 + -4x + 9

Reorder the terms:
70 = 31 + 9 + x + -4x

Combine like terms: 31 + 9 = 40
70 = 40 + x + -4x

Combine like terms: x + -4x = -3x
70 = 40 + -3x

Solving
70 = 40 + -3x

Solving for variable 'x'.

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

Add '3x' to each side of the equation.
70 + 3x = 40 + -3x + 3x

Combine like terms: -3x + 3x = 0
70 + 3x = 40 + 0
70 + 3x = 40

Add '-70' to each side of the equation.
70 + -70 + 3x = 40 + -70

Combine like terms: 70 + -70 = 0
0 + 3x = 40 + -70
3x = 40 + -70

Combine like terms: 40 + -70 = -30
3x = -30

Divide each side by '3'.
x = -10

Simplifying
x = -10

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