-40-3x=20-7x

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


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

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

Solving for variable 'x'.

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

Add '7x' to each side of the equation.
-40 + -3x + 7x = 20 + -7x + 7x

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

Combine like terms: -7x + 7x = 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 = 60
4x = 60

Divide each side by '4'.
x = 15

Simplifying
x = 15

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