1)1 3/4+2 4/5= 1 15/20+2 16/20=3 31/20= 4 11/20
2)4 11/20*30=91/20*30/1=91/2*3=273/2= 136 1/2(= 136,5)
1 3/4 = 7/4
2 4/5 = 14/5
7/4 + 14/5 = 35/20 + 56/20 = 91/20
91/20 * 30/1 =(91*3)/2 =273/2 = 136 1/2
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Verified answer
1)1 3/4+2 4/5= 1 15/20+2 16/20=3 31/20= 4 11/20
2)4 11/20*30=91/20*30/1=91/2*3=273/2= 136 1/2(= 136,5)
Verified answer
1 3/4 = 7/4
2 4/5 = 14/5
7/4 + 14/5 = 35/20 + 56/20 = 91/20
91/20 * 30/1 =(91*3)/2 =273/2 = 136 1/2