40=13-4x

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Solution for 40=13-4x equation:


Simplifying
40 = 13 + -4x

Solving
40 = 13 + -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.
40 + 4x = 13 + -4x + 4x

Combine like terms: -4x + 4x = 0
40 + 4x = 13 + 0
40 + 4x = 13

Add '-40' to each side of the equation.
40 + -40 + 4x = 13 + -40

Combine like terms: 40 + -40 = 0
0 + 4x = 13 + -40
4x = 13 + -40

Combine like terms: 13 + -40 = -27
4x = -27

Divide each side by '4'.
x = -6.75

Simplifying
x = -6.75

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