Question

multiplicacion de fracciones heterogeneas
1 . (7/12 x 4/14 ) + (3/5 x 6/9 )
2. (5/6 x 8/12 ) x (12/15 x 16/20 )

Answer 1

Explicación paso a paso:

1. 7 4 7 • 4 28

--- • ----- = ----------- = ---------

12 14 12 • 14 168

3 6 3 • 6 18

----- • ----- = ----------- = ---------

5 9 5 • 9 45

28 18 420 + 1008 1428

------ + ------ = --------------------- = ----------

168 45 2520 2520

2.- (5/6 • 8/12) • (12/15 • 16/20) =

40/ 72 • 192/300 =

7680/57600 resultado