Question

7b-4b please explain this​

Answer 1

Answer:

3b coz 7-4=3 !!!!

Step-by-step explanation:

Answer 2

Answer:

3b

Step-by-step explanation:

Hello there!

Let's do your equation, 7b-4b.

These numbers are called like-terms. Like-terms are constants or coefficients that are alike. Let's do 2+6x-4+x, for example.

6x and x are the like terms because they have x. But, we need to make x into a 1x because there's one x. In this equation, we are adding a positive minus a positive, also known as subtraction. So, the equation is 6x-1x. The answer to this is 5x. Now, lets do the constants. The like-terms are positive 2 and a negative 4. We are adding a positive plus a negative. Why? Because in 2+6x-4+x, the 4 is a negative, so that's the constant, not the sign. But, 2 has a positive after the number. Therefore, we are adding a positive plus a negative. 2+-4 is the equation. -2 is the answer.

Therefore, the answer to 2+6x-4+x is 5x-2.

Now, since you have an idea of what it is, we can do your problem. 7b-4b. 7-4 is, obviously, 3. Now, we can add the variable, b, to the end because we are dealing with coefficients. 3+b.

Thus, the answer to this is 3b.

I hope I made it clear enough for you...Have a great rest of your day :)