121=(15-z)+(-3x)

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Solution for 121=(15-z)+(-3x) equation:


Simplifying
121 = (15 + -1z) + (-3x)

Remove parenthesis around (15 + -1z)
121 = 15 + -1z + (-3x)

Reorder the terms:
121 = 15 + (-3x) + -1z

Solving
121 = 15 + (-3x) + -1z

Solving for variable 'x'.

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

Add '(3x)' to each side of the equation.
121 + (3x) = 15 + (-3x) + (3x) + -1z

Combine like terms: (-3x) + (3x) = 0
121 + (3x) = 15 + 0 + -1z
121 + (3x) = 15 + -1z

Add '-121' to each side of the equation.
121 + -121 + (3x) = 15 + -121 + -1z

Combine like terms: 121 + -121 = 0
0 + (3x) = 15 + -121 + -1z
(3x) = 15 + -121 + -1z

Combine like terms: 15 + -121 = -106
(3x) = -106 + -1z

Divide each side by '3'.
x = -35.33333333 + -0.3333333333z

Simplifying
x = -35.33333333 + -0.3333333333z

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