3+x=-15

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Solution for 3+x=-15 equation: 


Simplifying
3 + x = -15

Solving
3 + x = -15

Solving for variable 'x'.

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

Add '-3' to each side of the equation.
3 + -3 + x = -15 + -3

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

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

Simplifying
x = -18

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