7x+7(2x-7)=140

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Solution for 7x+7(2x-7)=140 equation:


Simplifying
7x + 7(2x + -7) = 140

Reorder the terms:
7x + 7(-7 + 2x) = 140
7x + (-7 * 7 + 2x * 7) = 140
7x + (-49 + 14x) = 140

Reorder the terms:
-49 + 7x + 14x = 140

Combine like terms: 7x + 14x = 21x
-49 + 21x = 140

Solving
-49 + 21x = 140

Solving for variable 'x'.

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

Add '49' to each side of the equation.
-49 + 49 + 21x = 140 + 49

Combine like terms: -49 + 49 = 0
0 + 21x = 140 + 49
21x = 140 + 49

Combine like terms: 140 + 49 = 189
21x = 189

Divide each side by '21'.
x = 9

Simplifying
x = 9

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