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Answer:

The equation is true.

Step-by-step explanation:

Simplify. Combine like terms:

3x + 15 = (2x + x) + (10 + 5)

3x + 15 = (3x) + 15

Isolate the variable, x. Note the equal sign, what you do to one side, you do to the other. Subtract 3x and 15 from both sides:

3x (-3x) + 15 (-15) = 3x (-3x) + 15 (-15)

3x - 3x = 15 - 15

0 = 0

~ True. The two expressions are equal to each other.

~

Answer: x can equal any number

Step-by-step explanation:

3x + 15 = 2x + 10 + x + 5

First, combine the like terms on the right side

2x + x = 3x

10 + 5 = 15

3x + 15 = 3x + 15

Subtract 15 from both sides

3x = 3x

Divide each side by 3

x = x

This means that x can equal any number, and the equation will always be true.

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