4x-7(x-20)=84

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Solution for 4x-7(x-20)=84 equation:


Simplifying
4x + -7(x + -20) = 84

Reorder the terms:
4x + -7(-20 + x) = 84
4x + (-20 * -7 + x * -7) = 84
4x + (140 + -7x) = 84

Reorder the terms:
140 + 4x + -7x = 84

Combine like terms: 4x + -7x = -3x
140 + -3x = 84

Solving
140 + -3x = 84

Solving for variable 'x'.

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

Add '-140' to each side of the equation.
140 + -140 + -3x = 84 + -140

Combine like terms: 140 + -140 = 0
0 + -3x = 84 + -140
-3x = 84 + -140

Combine like terms: 84 + -140 = -56
-3x = -56

Divide each side by '-3'.
x = 18.66666667

Simplifying
x = 18.66666667

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