Question

Simplify: 1 3 (6ab - 9b) + 2 3 (9ab + 12b) A) 5ab + 8b B) 5ab - 8b C) 8ab + 5b D) 8ab - 5b

Answer 1

78ab+234b

Explanation:

13 (6ab - 9b) + 23 (9ab + 12b)

open the bracket

78ab-117b+207b+144b

combine the like terms

78ab+234b

Answer 2

C 8ab +5b

Explanation:

1 /3 (6ab - 9b) + 2/3 (9ab + 12b)

Distribute the fractions

1 /3 (6ab) - 1/3(9b) + 2/3 (9ab) + 2/3(12b)

2ab - 3b +6ab +8b

Combine like terms

2ab +6ab -3b+8b

8ab +5b