Question

Simplify the expression:

–2b + 7 – 2a + 5b – 6a

A.) –8a+ 3b +7
B.) 8a – 3b + 7
C.) –4a + 7b + 7
D.) 4a – 3b + 7

Answer 1

the answer is b you just have to collect like terms

Answer 2

-8a + 3b +7 (Answer A)

Explanation:

Let's take all the like terms and put them together!

There's:

-2b and 5b

-6a and -2a

7

Let' add all of them to each other!

-2b + 5b is 3b

-6a + -2a is -8a

7 remains 7

Since a is the first letter of the alphabet, we would order it in alphabetical order.

-8a + 3b +7

The answer is A