7x-40=3x-20

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Solution for 7x-40=3x-20 equation:


Simplifying
7x + -40 = 3x + -20

Reorder the terms:
-40 + 7x = 3x + -20

Reorder the terms:
-40 + 7x = -20 + 3x

Solving
-40 + 7x = -20 + 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 + 7x + -3x = -20 + 3x + -3x

Combine like terms: 7x + -3x = 4x
-40 + 4x = -20 + 3x + -3x

Combine like terms: 3x + -3x = 0
-40 + 4x = -20 + 0
-40 + 4x = -20

Add '40' to each side of the equation.
-40 + 40 + 4x = -20 + 40

Combine like terms: -40 + 40 = 0
0 + 4x = -20 + 40
4x = -20 + 40

Combine like terms: -20 + 40 = 20
4x = 20

Divide each side by '4'.
x = 5

Simplifying
x = 5

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