What is 6(a+7) when a=8

6(a + 7)

6(8+7)

6(15)
= 90
0r

6a + 42
6(8) + 42
48 + 42 = 90

To find the value of 6(a+7) when a=8, you need to substitute the value of a into the given expression and perform the necessary calculations.

Start by replacing the variable 'a' with the value of 8:

6(8+7)

Next, simplify the expression inside the parentheses:

6(15)

Now, multiply 6 by 15:

90

Therefore, when a=8, 6(a+7) is equal to 90.