hitunglah hasil operasi pecahan berikut! a. ( 3/5 x 6 2/9 ) + ( 3 3/4 : 5/12 ) b. ( 4 4/5 : 3 1/8 ) + ( 6 1/4 x 3 1/5 ) c. ( 15 5/8 : 2 1/12 ) - ( 2 1/7 x 3
Matematika
zakiganteng
Pertanyaan
hitunglah hasil operasi pecahan berikut! a. ( 3/5 x 6 2/9 ) + ( 3 3/4 : 5/12 ) b. ( 4 4/5 : 3 1/8 ) + ( 6 1/4 x 3 1/5 ) c. ( 15 5/8 : 2 1/12 ) - ( 2 1/7 x 3 3/10 ) ??? tolong bantuannya yaa. jawabnya pakai cara
1 Jawaban
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1. Jawaban trincy
A. (3/5 x 6 2/9) + (3 3/4 : 5/12)
= (3/5 x 56/9) + (15/4 : 5/12)
= (56/15) + (15/4 x 12/5)
= 56/15 + 9
= 56/15 + 135/15
= 191/5
= 38 1/5
B. (4 4/5 : 3 1/8) + (6 1/4 x 3 1/5)
=(24/5 : 25/8) + (25/4 x 16/5)
= (24/5 x 8/25) + 20
= 184/75 + 1500/75
= 1684/75
= 22 34/75
C. (15 5/8 : 2 1/12) - (2 1/7 x 3 3/10)
= (125/8 : 25/12) - (15/7 x 33/10)
= (125/8 x 12/25) - 99/14
= 15/2 - 99/14
= 105/14 - 99/14
= 6/14 = 3/7