7x+-2(x-10)=40

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Solution for 7x+-2(x-10)=40 equation:


Simplifying
7x + -2(x + -10) = 40

Reorder the terms:
7x + -2(-10 + x) = 40
7x + (-10 * -2 + x * -2) = 40
7x + (20 + -2x) = 40

Reorder the terms:
20 + 7x + -2x = 40

Combine like terms: 7x + -2x = 5x
20 + 5x = 40

Solving
20 + 5x = 40

Solving for variable 'x'.

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

Add '-20' to each side of the equation.
20 + -20 + 5x = 40 + -20

Combine like terms: 20 + -20 = 0
0 + 5x = 40 + -20
5x = 40 + -20

Combine like terms: 40 + -20 = 20
5x = 20

Divide each side by '5'.
x = 4

Simplifying
x = 4

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