Question

If the cube of 1+3/5 is 4 + x/125 find x

Answer 1

Answer

12
Step-by-step explanation:
If the cube of 1 +3/5 is 4 +x/125, find the value of x
(1+3/5)^3=4+x/125
Simplifying left hand side of equation:
(1+3/5)^3=(8/5)^3= 512/125 = 4 12/125= 4+ 12/125
Comparing left and right sides:
4+ 12/125= 4+x/125
12/125=x/125
x=12
Answer: 12


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Answer 2

Answer:

Step-by-step explanation:

(1+$\frac{3}{5}$)³

($\frac{8}{5}$)³        [by taking L.C.M

$\frac{64}{25}$       [ 8^3 is 64 , 5^3 is 25]

according to question

64/25 = 4+x/125

64/25 = 500+x / 125

(64/25 )*125 = 500+x

320 = 500 +x

x= -180