-X-4(2x+1z-15)+3z=-20

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Solution for -X-4(2x+1z-15)+3z=-20 equation:


Simplifying
-1X + -4(2x + 1z + -15) + 3z = -20

Reorder the terms:
-1X + -4(-15 + 2x + 1z) + 3z = -20
-1X + (-15 * -4 + 2x * -4 + 1z * -4) + 3z = -20
-1X + (60 + -8x + -4z) + 3z = -20

Reorder the terms:
60 + -1X + -8x + -4z + 3z = -20

Combine like terms: -4z + 3z = -1z
60 + -1X + -8x + -1z = -20

Solving
60 + -1X + -8x + -1z = -20

Solving for variable 'X'.

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

Add '-60' to each side of the equation.
60 + -1X + -8x + -60 + -1z = -20 + -60

Reorder the terms:
60 + -60 + -1X + -8x + -1z = -20 + -60

Combine like terms: 60 + -60 = 0
0 + -1X + -8x + -1z = -20 + -60
-1X + -8x + -1z = -20 + -60

Combine like terms: -20 + -60 = -80
-1X + -8x + -1z = -80

Add '8x' to each side of the equation.
-1X + -8x + 8x + -1z = -80 + 8x

Combine like terms: -8x + 8x = 0
-1X + 0 + -1z = -80 + 8x
-1X + -1z = -80 + 8x

Add 'z' to each side of the equation.
-1X + -1z + z = -80 + 8x + z

Combine like terms: -1z + z = 0
-1X + 0 = -80 + 8x + z
-1X = -80 + 8x + z

Divide each side by '-1'.
X = 80 + -8x + -1z

Simplifying
X = 80 + -8x + -1z

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