-20+(-4x+-1)=-15

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Solution for -20+(-4x+-1)=-15 equation: 


Simplifying
-20 + (-4x + -1) = -15

Reorder the terms:
-20 + (-1 + -4x) = -15

Remove parenthesis around (-1 + -4x)
-20 + -1 + -4x = -15

Combine like terms: -20 + -1 = -21
-21 + -4x = -15

Solving
-21 + -4x = -15

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 + -4x = -15 + 21

Combine like terms: -21 + 21 = 0
0 + -4x = -15 + 21
-4x = -15 + 21

Combine like terms: -15 + 21 = 6
-4x = 6

Divide each side by '-4'.
x = -1.5

Simplifying
x = -1.5

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