15+x+3=-1

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Solution for 15+x+3=-1 equation: 


Simplifying
15 + x + 3 = -1

Reorder the terms:
15 + 3 + x = -1

Combine like terms: 15 + 3 = 18
18 + x = -1

Solving
18 + x = -1

Solving for variable 'x'.

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

Add '-18' to each side of the equation.
18 + -18 + x = -1 + -18

Combine like terms: 18 + -18 = 0
0 + x = -1 + -18
x = -1 + -18

Combine like terms: -1 + -18 = -19
x = -19

Simplifying
x = -19

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