Question

What is 2b- 5b +7b -b

Answer 1

Answer:

Solution

2b- 5b + 7b - b

3b+ 7b - b

10 b - 1b

9b

Answer : 9b

Answer 2

Answer: 3b

Step-by-step explanation:

Step 1: Remembering PEMDAS

PEMDAS stands for

• Parentheses
• Exponent
• Multiplication/Division
• Addition/Subtraction

Reading this according to PEMDAS doesn't change it, but it is important to keep it in mind when doing math.

Step 2: Simplifying

To simplify, combine like terms. All b variables are like terms. According to PEMDAS, we read this left to right. Solving goes as follows:

2b-5b+7b-b                  Add the - and 5b to create -5b; add 2b and -5b

-3b+7b-b                       Add -3b and 7b

4b-b                              Add the - and b to create -b; add 4b and -b

3b                                  The total is 3b

Hope this helps!