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 = 9x
-20 + 9x = 40

Solving
-20 + 9x = 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 + 9x = 40 + 20

Combine like terms: -20 + 20 = 0
0 + 9x = 40 + 20
9x = 40 + 20

Combine like terms: 40 + 20 = 60
9x = 60

Divide each side by '9'.
x = 6.666666667

Simplifying
x = 6.666666667

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