Question

which expression is equivalent to the given expression? 3 (2a+5)....a) 11a. b)6a+15. c) 6a+5. or d) 21a

Answer 1

Answer:

The expression 3(2a+5) is equivalent to 6a + 15 .

Option (b) is correct .

Step-by-step explanation:

As given the expression in the question be as follows

= 3 (2a + 5)

First open the bracket of the above expression

= 3 × 2a + 3 × 5

Sloving the above

= 6a + 15

Therefore  the expression 3(2a+5) is equivalent to 6a + 15 .

Option (b) is correct .

Answer 2

3(2a+5)
6a+15 divide both sides by 6
a=2.5