Question

What is the value of a in the equation 5a – 10b = 45, when b = 3?

3
15
21
39

Answer 1

5a - 10b = 45

Plug in 3 for 'b':

5a - 10(3) = 45

Can you multiply -10 * 3?

Answer 2

i got -30

Answer 3

Yes, so we have:

5a - 30 = 45

Add 30 to both sides, what's 45 + 30?

Answer 4

75

Answer 5

Yes, so we have:

5a = 75

Now divide 5 to both sides, what's 75 / 5?

Answer 6

15! =D

Answer 7

Yes, so a = 15!

Answer 8

Thanks mann ' you very good at math man! =D

Answer 9

No problem!

Answer 10

I need help doing a quiz i just got bro ' can I you help me through it?