Question

What is the value of the expression (3a-b)/(6(b+a)) when a = 5 and b = -3? Show your work to support your answer

Answer 1

Answer:

-3

Step-by-step explanation:

So you have $\frac{3a-b}{b(b+a)}$ , and with the numbers plugged in, it's $\frac{3(5)+(-3)}{-3(-3+5)}$.  Solve this and you get $\frac{18}{-6}$.  When it's simplifyed, you have $\frac{-3}{-1}$, which is -3.

Answer 2

Answer:

it would be 25 because...

Step-by-step explanation:

a+b=5   ...(1)    and    3a+2b=20 ...(2)

Multiplying (1) by 2 and subtracting from (2), we get : a=10.

Putting a=10 in (1), we get : b=-5

Therefore,   (3a+b) = 3 x 10+(-5)=30-5=25.

no promblem