Question

Subtract 11/20from-4/5and add -9/10to the answer.

Answer 1

step by step:

firstly we will add

so take lcm

LCM of 10 and 20 is 20

11×1+9×2/20

= 11+18/20

= 29/18

so we ge 29 / 18

then we have to subtract

4/5 - 29/18

again LCM = 90

4×18 + 29×5 /90

72+145 /90

=217 /90