Question

simplify 0.144÷1.2/0.016÷0.02+7/5-21/8.​

Answer 1

Answer:

=0.12/0.8+7×8/5×8-21×5/8×5

=0.15+56/40-105/40

=15/100+56/40-105/40

(15/100=3/20)

so,=3/20+56/40-105/40

by doing base same now,we get

3×2/20×2+56/40-105/40

6/40+56/40-105/40

=43/40

=1 3/40