Question

simplify : -3/10 +7/15 +3/-20+-9/10+13/15+13/20

Answer 1

the answer of thos question is 19/30

Answer 2

$\text{solution}$

Given : -3/10 + 7/15 + 3/-20 + -9/10 + 13/15 + 13/20

= -3/10 + 7/15 - 3/20 - 9/10 + 13/15 + 13/20

Now, take the L. C. M of 10, 15, 20, 10, 15 & 20
And the L. C. M is 60

= -3×6/10×6 + 7×4/15×4 - 3×3/20×3 - 9×6/10×6 + 13×4/15×4 + 13×3/20×3

= -18+28-9-54+52+39/60

= 10-9-54+52+39/69

= 1-54+52+39/69

= -53+52+39/60

= -1+39/69

= 38/69

= 19/30

★ BE BRAINLY ★