2x-3(-7x+7)=140

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Solution for 2x-3(-7x+7)=140 equation:


Simplifying
2x + -3(-7x + 7) = 140

Reorder the terms:
2x + -3(7 + -7x) = 140
2x + (7 * -3 + -7x * -3) = 140
2x + (-21 + 21x) = 140

Reorder the terms:
-21 + 2x + 21x = 140

Combine like terms: 2x + 21x = 23x
-21 + 23x = 140

Solving
-21 + 23x = 140

Solving for variable 'x'.

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

Add '21' to each side of the equation.
-21 + 21 + 23x = 140 + 21

Combine like terms: -21 + 21 = 0
0 + 23x = 140 + 21
23x = 140 + 21

Combine like terms: 140 + 21 = 161
23x = 161

Divide each side by '23'.
x = 7

Simplifying
x = 7

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