Question

if 1/3 of a number exceeds its 2/7 bu 1, find the number?

Answer 1

hye

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let the number be x 

1/3 of a number exceeds its 2/7 by 1

lets form an equation

=> $\frac{1x}{3} = \frac{2x}{7} +1$

=>$\frac{1x}{3} - \frac{2x}{7} =1$

=>$\frac{7x}{21} - \frac{6x}{21} =1$

=>$\frac{1x}{21} =1$

=>$1x = 21*1$

=> 21 

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hope it helps u .......

Answer 2

let the number be x
1/3*x-2/7*x=1
x/3-2x/7=1

l.c.m. of 3 and 7=21
(7x-6x)/21=1
x/21=1
x=21*1
x=21




hope it helped you