Question

2. If 75M = 225, then find the value of 3M – 9 = _____ *

Answer 1

Solution :-

H.C.F. of 225 and 60 = (225*5) - 10x

First of all we have to compute the highest common factor of 225 and 60 to solve this question.

H.C.F. Of 225 and 60

   3  |    225, 60

       |_______________

   5  |      75, 20

       |_______________

       |      15. 4

       |

         

H.C.F. = 3*5

= 15

H.C.F. of 225 and 60 is 15

Now, according to the question.

H.C.F. of 225 and 60 = (225*5) - 10x

15 = (225*5) - 10x  

15 = 1125 - 10x

15 - 1125 = - 10x

- 1110 = - 10x

Negative signs are cancelled.

x = 1110/10

x = 111

Hence, the value of x is 111.

Answer 2

Answer:

3m−5=3×2−5 [Putting m=2]

=6−5=1