Tolong dibantu yaa nomor 1 pake caranya. Makasi

= ( 2 1/2 : 1 2/3 ) + 1 3/4 - ( 1 1/4 x 1 1/3 )
= ( 5/2 : 5/3 ) + 7/4 - ( 5/4 x 4/3 )
= ( 5/2 x 3/5 ) + 7/4 - ( 5/4 x 4/3)
= ( 15/10 ) + 7/4 - ( 20/12 )
= 90+105-100/60
= 95/60
= 1 35/60
= 1 7/12