Question

Rezultatul calculului
(-0,7)•5/14+4/21•0,7-0,7•6/35
Este....?

Answer 1

Răspuns:

(-7/10)•5/14 + 4/21•7/10 - 7/10•6/35 =

-1/4 + 2/15 - 3/25 =

Numitor comun

4=2^2

15=3•5

25=5^2

cmmmc=2^2 • 3 • 5^2=300

-75/300 + 40/300 - 36/300 =

-71/300