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sergeyescobare
@sergeyescobare
May 2023
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sofiyasidorenkova04
1) (17/10 - 1/20) *2/15
а) 34/20 - 1/20= 33/20
б) 33/20 * 2/15 = 66/300= 22/100= 0,22
2) 1/1/35 -1/60
а) 1/35-1/60= 12/420- 7/420= 5/420
б) 1: 5/420= 420:5 = 84
3) 18* (1/9)^2 - 20*1/9
а) 18* (1/9)^2= 18* 1/81= 18/81
б) 18/81 - 20/9= 18/81 - 180/81= -162/81= -2
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Answers & Comments
а) 34/20 - 1/20= 33/20
б) 33/20 * 2/15 = 66/300= 22/100= 0,22
2) 1/1/35 -1/60
а) 1/35-1/60= 12/420- 7/420= 5/420
б) 1: 5/420= 420:5 = 84
3) 18* (1/9)^2 - 20*1/9
а) 18* (1/9)^2= 18* 1/81= 18/81
б) 18/81 - 20/9= 18/81 - 180/81= -162/81= -2