3x+13=-15-4x

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Solution for 3x+13=-15-4x equation:


Simplifying
3x + 13 = -15 + -4x

Reorder the terms:
13 + 3x = -15 + -4x

Solving
13 + 3x = -15 + -4x

Solving for variable 'x'.

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

Add '4x' to each side of the equation.
13 + 3x + 4x = -15 + -4x + 4x

Combine like terms: 3x + 4x = 7x
13 + 7x = -15 + -4x + 4x

Combine like terms: -4x + 4x = 0
13 + 7x = -15 + 0
13 + 7x = -15

Add '-13' to each side of the equation.
13 + -13 + 7x = -15 + -13

Combine like terms: 13 + -13 = 0
0 + 7x = -15 + -13
7x = -15 + -13

Combine like terms: -15 + -13 = -28
7x = -28

Divide each side by '7'.
x = -4

Simplifying
x = -4

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