Question

(12ab - 5a) - 9(ab+6a)

Answer 1

Ответ:

(12ab-5a)-9(ab+6a)=12ab-5a-9ab-54a=3ab-59a

Answer 2

(12ab-5a)-9(ab+6a) = 12ab - 5a - 9*ab - 9*6a = 12ab - 5a - 9ab - 54a =

= 3ab - 59a

Answer 3

To simplify the expression (12ab - 5a) - 9(ab + 6a), you can use the distributive property to remove the parentheses and then combine like terms. Here are the steps:

1. Distribute the -9 to both terms inside the second set of parentheses:

(12ab - 5a) - 9ab - 54a

2. Now, combine like terms by adding or subtracting coefficients of the same variable (a or ab):

12ab - 9ab = 3ab -5a - 54a = -59a

3. Put the simplified terms together:

(3ab - 59a)

So, the simplified expression is 3ab - 59a.