40=2X-20

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Solution for 40=2X-20 equation: 


Simplifying
40 = 2X + -20

Reorder the terms:
40 = -20 + 2X

Solving
40 = -20 + 2X

Solving for variable 'X'.

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

Add '-2X' to each side of the equation.
40 + -2X = -20 + 2X + -2X

Combine like terms: 2X + -2X = 0
40 + -2X = -20 + 0
40 + -2X = -20

Add '-40' to each side of the equation.
40 + -40 + -2X = -20 + -40

Combine like terms: 40 + -40 = 0
0 + -2X = -20 + -40
-2X = -20 + -40

Combine like terms: -20 + -40 = -60
-2X = -60

Divide each side by '-2'.
X = 30

Simplifying
X = 30

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