Question

Select all pairs of like terms in the expression 3x−4+x+7
.(2 points)
Responses

3x and x
3x and x

3x and −4
3x and −4

−4 and 7
−4 and 7

x and −7
x and −7

Answer 1

In the expression \( 3x - 4 + x + 7 \), we can identify the like terms.

The like terms are:

- \( 3x \) and \( x \) (both are terms with the variable \( x \)).
- \( -4 \) and \( 7 \) (both are constant terms).

So the correct pairs of like terms are:

- **3x and x**
- **−4 and 7**

The other options (3x and -4, x and -7) are not pairs of like terms.

Thus, the pairs of like terms in the expression are:

- **3x and x**
- **−4 and 7**