Question

s=n/2(a+l)

Answer 1

Kindly say what you need done to that equation.

Answer 2

i need to solve for the indicated variable

Answer 3

Well, I can spot 3 variables: s, n and a. Which one?

Answer 4

for a

Answer 5

First step, multiply 2 into the brackets in that denominator. What do we get?

Answer 6

2a+2l

Answer 7

Is that a 21?

Answer 8

2L

Answer 9

Oh, okay. Now, multiply both sides of the equation by (2a+2l). What does the equation become?

Answer 10

2A+2L/s=N

Answer 11

Isn't it s(2A+2L)=N ?

Answer 12

i see your answer

Answer 13

Good. Can you proceed to get the value of a?

Answer 14

yes i have finished the problem and found the answer thank you

Answer 15

You're welcome :)