4x-7(x+20)=85

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Solution for 4x-7(x+20)=85 equation:


Simplifying
4x + -7(x + 20) = 85

Reorder the terms:
4x + -7(20 + x) = 85
4x + (20 * -7 + x * -7) = 85
4x + (-140 + -7x) = 85

Reorder the terms:
-140 + 4x + -7x = 85

Combine like terms: 4x + -7x = -3x
-140 + -3x = 85

Solving
-140 + -3x = 85

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 = 85 + 140

Combine like terms: -140 + 140 = 0
0 + -3x = 85 + 140
-3x = 85 + 140

Combine like terms: 85 + 140 = 225
-3x = 225

Divide each side by '-3'.
x = -75

Simplifying
x = -75

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