x-40=4x-7x

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Solution for x-40=4x-7x equation: 


Simplifying
x + -40 = 4x + -7x

Reorder the terms:
-40 + x = 4x + -7x

Combine like terms: 4x + -7x = -3x
-40 + x = -3x

Solving
-40 + x = -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.
-40 + x + 3x = -3x + 3x

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

Combine like terms: -3x + 3x = 0
-40 + 4x = 0

Add '40' to each side of the equation.
-40 + 40 + 4x = 0 + 40

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

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

Divide each side by '4'.
x = 10

Simplifying
x = 10

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