3x+20=-15

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Solution for 3x+20=-15 equation: 


Simplifying
3x + 20 = -15

Reorder the terms:
20 + 3x = -15

Solving
20 + 3x = -15

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 = -15 + -20

Combine like terms: 20 + -20 = 0
0 + 3x = -15 + -20
3x = -15 + -20

Combine like terms: -15 + -20 = -35
3x = -35

Divide each side by '3'.
x = -11.66666667

Simplifying
x = -11.66666667

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