Question

I got a couple more questions that i am confused about!

Question 1: Describe how you would use the distributive property to simplify (39 x 5). (I think it may be 195 but i dont know if i worked it out right)

Question 2: Your best friend tells you the solution of 375 = x - 28 is 347. Explain your best friend's error and tell him/her the correct answer

Answer 1

for number 2
375=x-28
Add 28 to both sides so it can cancel out
X=403
And plug it in and you can check it like that.

Answer 2

Question 2 = Add 28 on both sides
Question 1 = (39*5) = 195
Put 39 into a+b form so that
(a+b)5 = a*5 +b*5 = 195
a+b = 39
a*5 +b*5 = 195
solve the equations for a and b

Answer 3

Or just simply do this: 5(39) = 5(30 + 9)

Answer 4

@Hero I assumed from the second equation. But I apologize if its not the correct way for Timetolearn

Answer 5

I see. For questions like these. If you have something like 27 you can rewrite it as 20 + 7

Answer 6

Notice that "thirty nine" is actually 30 + 9
"twenty seven" is actually 20 + 7

Answer 7

Oh! Thanks so much. This is some preview questions for a test :) I just
did not understand well.

Answer 8

You're welcome

Answer 9

Also, @sangya21 you attempted to represent the problem as a system of equations. It wasn't exactly meant to be represented in this manner even though your system works. This approach doesn't work for all systems of equations obviously.

Answer 10

@Hero It has been a while for me doing these questions and as a course of nature I have forgot few basics. Thanks for clearing it up. I try to solve through the ways I remember