7 times the reciprocal of a number added to 2/3 is 3. Find the number.
Answers
Answered by
7
let the number be x. then it's reciprocal would be 1/x.
ATQ,
7/x+2/3=3
=: 7/x=3-(2/3)
=:7/x = 9-2/3
=:7/x = 7/3
by cross multiplication,
7×3 = 7x
=: x = 7×3/7
=3
ranahitaparavada:
Why should we cross multiply?
Please answer
then only we can find tbe value of x. otherwise u can also write directly
Answered by
5
Answer:
Step-by-step explanation:
Let the no. =X
It's reciprocal=1\x
7/x+2/3=3
7/x=3-2/3
7/x=9-2/3
7/x=7/3
1/x=7/3*1/7
1/x=1/3
Solving in the above equation
7x+2/3=3
7/3+2/3=9/3=3
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