Question

PAKAI CARA BRO...

1.Sederhanakanlah pecahan berikut!
a.2 3/4 + 2/5 - 3/5 =
b.(2 2/3 - 1/4) +5/6 =
c.1 1/5 + (2/3 - 6/15 =

Answer 1

A. 2 3/4 + 2/5 - 3/5 = 55/20 + 8/20 - 12/20
= 51/20
= 2 11/20
b. ( 2 2/3 - 1/4 ) + 5/6 = ( 8/3 - 1/4 ) + 5/6
= ( 32/12 - 3/12 ) + 10/12
= ( 29/12 ) + 10/12
= 39/12
= 3 3/12
= 3 1/4
c. 1 1/5 + ( 2/3 - 6/15 ) = 6/15 + ( 10/15 - 6/15 )
= 6/15 + ( 4/15 )
= 10/15
= 2/3