x/3+x/5+x/15=3 give me correct answer I well follow you I know the correct answer ?
Answers
Step-by-step explanation:
3
+
5
+
1
5
=
3
\frac{x}{3}+\frac{x}{5}+\frac{x}{15}=3
3x+5x+15x=3
3
⋅
5
(
3
+
5
+
1
5
)
=
3
⋅
5
⋅
3
3 \cdot 5(\frac{x}{3}+\frac{x}{5}+\frac{x}{15})=3 \cdot 5 \cdot 3
3⋅5(3x+5x+15x)=3⋅5⋅3
Answer:
R = (L x 3/5) – 14m, and that ((L x 2/5) +14) /R = 3, or 2L/5 + 14 = 3R. By substituting the first equation in the second we have 2L/5 + 14 = 9L/5 –42. Which rearranges to:7L/5 = 56, or L = 40. So R = 10m.
Interestingly, the Singapore method of solution is different. It requires us to think more visually about the string: We cut 2/5 of it. Then 14m, and are left with a piece that is a third of the size of what was cut. In other words, we are left with 1/4 of the original length. In order to compare the fractions 2/5 and then 1/4, lets change them to the lowest common denominator, which is 20. So, we cut off 8/20, subtract 14m and are left with 5/20. Let’s now draw the string divided into twentieths:
HOPE THIS HELPS U!!