Question

B) Add the following fractions.
1) 7/12 +8/15 + 6/18​

Answer 1

Answer:

LCM OF 12, 15, 18 = 180

7x15 + 8×12 + 18×10 /180

105+96+60/180

261/180

by dividing you will get less number =29/20

Answer 2

Given: 7/12, 8/15 and 6/18​

To find: Sum of the given fractions.

Solution:

• In order to calculate the sum of these fractions, first, the L.C.M. of the denominators of these fractions are to be found.

• The L.C.M. of 12, 15 and 18 is 180.
• Now, the numerator and denominator of each fraction is multiplied by a suitable fraction such that the denominator gives a product equal to 180.

        $\frac{7}{12} * \frac{15}{15} = \frac{105}{180}$

        $\frac{8}{15} * \frac{12}{12} = \frac{96}{180}$

        $\frac{6}{18} * \frac{10}{10} = \frac{60}{180}$

• Now, since the denominators of all the fractions are equal, the numerators can be added up.
• So. on adding the numerators, the following fraction is obtained,

       $\frac{105 + 96 + 60}{180} = \frac{261}{180}$

Therefore, the sum of the given fractions is 261/180.