3x+[x+5]=15

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Solution for 3x+[x+5]=15 equation:


Simplifying
3x + [x + 5] = 15

Reorder the terms:
3x + [5 + x] = 15

Remove brackets around [5 + x]
3x + 5 + x = 15

Reorder the terms:
5 + 3x + x = 15

Combine like terms: 3x + x = 4x
5 + 4x = 15

Solving
5 + 4x = 15

Solving for variable 'x'.

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

Add '-5' to each side of the equation.
5 + -5 + 4x = 15 + -5

Combine like terms: 5 + -5 = 0
0 + 4x = 15 + -5
4x = 15 + -5

Combine like terms: 15 + -5 = 10
4x = 10

Divide each side by '4'.
x = 2.5

Simplifying
x = 2.5

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