Question

multiple choice 2 points
which expression is equivalent to 4a + (-6b) - 3a + 2b?
a. a + 4b
b. a - 4b
c. 7a - 8b
d. 7a - 4b

Explanation:

Step1: Group like terms

$(4a - 3a) + (-6b + 2b)$

Step2: Simplify each group

$ (4-3)a + (-6+2)b = 1a -4b$

Answer:

B. $a - 4b$