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kada96
09.07.2019 •
Mathematics
How to cross cancel fractions for example 3/5 •15/18
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Ответ:
We can start by observing that 18 is a multiple of 3, and it is obtained by multiplying 3 by 6.
So... We can cross out 3 and put a 1 in its place, and we can do the same for 18 but instead by putting a 6 in its place.
This is what we have now:
However, we are not done yet, we can see that 15 is a multiple of 5, which can be obtained by multiplying 5 by 3.
Therefore... We can cross out 5 and put a 1 in its place, and we can cross out 15 and put a 3 in its place. This is what we have now:
Now, we can simplify the expression above to get 1/2, or 0.5 in decimal form. Hope this helps and have a nice day!
Ответ:
8 = m/4
8 = m/4 is equivalent to m/4 = 8:
m/4 = 8
Multiply both sides of m/4 = 8 by 4:
(4 m)/4 = 4×8
(4 m)/4 = 4/4×m = m:
m = 4×8
4×8 = 32:
m = 32 thus 32 - 12 = 20