4(x-1)-5(4x+5)=20

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Solution for 4(x-1)-5(4x+5)=20 equation:


Simplifying
4(x + -1) + -5(4x + 5) = 20

Reorder the terms:
4(-1 + x) + -5(4x + 5) = 20
(-1 * 4 + x * 4) + -5(4x + 5) = 20
(-4 + 4x) + -5(4x + 5) = 20

Reorder the terms:
-4 + 4x + -5(5 + 4x) = 20
-4 + 4x + (5 * -5 + 4x * -5) = 20
-4 + 4x + (-25 + -20x) = 20

Reorder the terms:
-4 + -25 + 4x + -20x = 20

Combine like terms: -4 + -25 = -29
-29 + 4x + -20x = 20

Combine like terms: 4x + -20x = -16x
-29 + -16x = 20

Solving
-29 + -16x = 20

Solving for variable 'x'.

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

Add '29' to each side of the equation.
-29 + 29 + -16x = 20 + 29

Combine like terms: -29 + 29 = 0
0 + -16x = 20 + 29
-16x = 20 + 29

Combine like terms: 20 + 29 = 49
-16x = 49

Divide each side by '-16'.
x = -3.0625

Simplifying
x = -3.0625

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