Question

-(x+2) +2x = 17

-X+2+2x=17
X+2=17
X=15
What is the mistake that was made in solving the equation?
A. They did not combine like terms properly.
B. They did not eliminate the constent properly.
C. They did it correctly.
D. They did not distribute properly.

Answer 1

The mistake in solving the equation is that the student did not combine like terms properly.

Step-by-step explanation:

The mistake in solving the equation is that the student did not combine like terms properly.

Step-by-step:

1. Begin by distributing the negative sign to both terms inside the parentheses: -(x+2) = -x-2.
2. Simplify the equation by combining like terms: -x-2+2x = 17.
3. Combine the x terms: x-2+2x = 17.
4. Combine the constant terms: 3x-2 = 17.

So, the answer is A. They did not combine like terms properly.