Question

find the sum of 3/20 + -41/20 + 7/20​

Answer 1

4/15+17/20

(Refer image 6.1)

LCM of 15 and 20 =(5×3×2×2)=60

4/15+17/20=(4×4)/(15×4)+(17×3)/(20×3)

=16/60+51/60

=67/60

(Refer image 6.2)

=1

60

7

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