4x-(7x+20)=85

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


Simplifying
4x + -1(7x + 20) = 85

Reorder the terms:
4x + -1(20 + 7x) = 85
4x + (20 * -1 + 7x * -1) = 85
4x + (-20 + -7x) = 85

Reorder the terms:
-20 + 4x + -7x = 85

Combine like terms: 4x + -7x = -3x
-20 + -3x = 85

Solving
-20 + -3x = 85

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 + -3x = 85 + 20

Combine like terms: -20 + 20 = 0
0 + -3x = 85 + 20
-3x = 85 + 20

Combine like terms: 85 + 20 = 105
-3x = 105

Divide each side by '-3'.
x = -35

Simplifying
x = -35

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