Select all pairs of like terms in the expression%C2%A03x−4+x+7 .(2 points) Responses −4%C2%A0and%C2%A07 −4%C2%A0and%C2%A07 3x%C2%A0and%C2%A0x 3x%C2%A0and%C2%A0x x%C2%A0and%C2%A0−7 x%C2%A0and%C2%A0−7 3x%C2%A0and%C2%A0−4

Answer 1

In the expression $3x-4+x+7$, we can identify the like terms. Like terms are terms that contain the same variable raised to the same power.

1. The terms $3x$ and $x$ are like terms because they both contain the variable $x$.
2. The terms $-4$ and $7$ are like terms because they are both constant terms without any variables.

So the pairs of like terms are:

• $3x$ and $x$
• $-4$ and $7$

The correct responses would be:

• $3x$ and $x$
• $-4$ and $7$