7 1/5*2 1/8 + 7 1/5*5/8

Question

7 1/5*2 1/8 + 7 1/5*5/8

Answer 1

7.1/5*2.1/8+7.1/5*5/8=7.1/5(2.1/8+5/8)=7.1/5*2.6/8=7.1/5*2.3/4=36/5*22/8= 36/5*11/4=396/20=99/5=19.4/5

Comments

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пожалуйста

Answer 2

1) 7 1/5×2 1/8 = 36/5×17/8 = 153/10
2) 36/5×5/8 = 9/2
3) 153/10+9/2 = 153/10+45/10 = 198/10 = 19 8/10 = 19 4/5