30-40=-2x+7x-4x

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Solution for 30-40=-2x+7x-4x equation:


Simplifying
30 + -40 = -2x + 7x + -4x

Combine like terms: 30 + -40 = -10
-10 = -2x + 7x + -4x

Combine like terms: -2x + 7x = 5x
-10 = 5x + -4x

Combine like terms: 5x + -4x = 1x
-10 = 1x

Solving
-10 = 1x

Solving for variable 'x'.

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

Add '-1x' to each side of the equation.
-10 + -1x = 1x + -1x

Combine like terms: 1x + -1x = 0
-10 + -1x = 0

Add '10' to each side of the equation.
-10 + 10 + -1x = 0 + 10

Combine like terms: -10 + 10 = 0
0 + -1x = 0 + 10
-1x = 0 + 10

Combine like terms: 0 + 10 = 10
-1x = 10

Divide each side by '-1'.
x = -10

Simplifying
x = -10

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