Asked by Johnnie

What is the greatest common factor of 15, 30, and 45. My answer is 3.
let me know if this right.

Subtract - 7 -(-5.7).= 50
Is this right
Answered by Salman
greatest common factor is the hightest possible number which can divide all the three , 15, 30 and 45 all are divisble by 15 so the gcf is 15 :)
Answered by Johnnie
Subtract -7-(-5.7).
is the answer is 3.99
Answered by Salman
Does the dot"." represents multiplication ? if so then

-7-(5x7) = -7 - (-35)
'''''''' = -7 + 35
'''''''' = 28
Answered by Reiny
Subtract -7-(-5.7)

-7-(-5.7)
= -7 + 5.7
= -1.3

I found Salman's response to this post intriguing.
We should clearly be aware of the fact that there are different ways to represent decimal numbers.
In many English speaking countries like US, Canada, UK, and Australia, the "dot" is used as a decimal place indicator, while a large portion of the rest of the world uses the comma to show where the decimal place is.

Just an observations for what it is worth.
Answered by Johnnie
It subtact problem negative 7 minus(negative5 point7)=what
Answered by Ms. Sue
Happy Birthday!!
Those are all correct, keep practicing!!