pringlehannah5151
13.08.2020 •
Mathematics
what is the common number to be subtracted from each term of the ratio 11:8 to get the new ratio 2:1.?
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Ответ:
5 should be subtracted from each term
Step-by-step explanation:
Cross multiply,
1 * (11 - x) = 2*(8-x)
11 -x = 2*8 - 2*x
11 - x = 16 - 2x
Subtract 11 from both sides,
-x = 16 - 2x - 11
-x = 5 - 2x
Add 2x to both sides
-x +2x = 5 - 2 + 2x
x = 5
Ответ:
C btw I'm not sure I just need to ask my question so I have to answer other peoples questions