13/5y-2.4/14y= 1/10-3 11/30 +1 7/25 - вопрос №76926071352414110311301725 от Вичка11111111 17.03.2021 13:28

Question

Математика: 13/5y-2.4/14y= 1/10-3 11/30 +1 7/25

Вичка11111111 · Answer

1 3/5 у - 2 4/14 у= 1/10 - 3 11/30 + 1 7/25
1) 1 3/5у - 2 4/14у = 8у/5 - 32у/14 = 112у/70 - 160у/70 = - 48у/70 = - 24у/35
2) 1/10 - 3 11/30 + 1 7/25 = 1/10 - 101/30 + 32/25 = 75/750 - 2525/750 +960/750 = -1490/750
3) - 24у/35 = -1490/750
у = 1043/360 = 2 323/360

13/5y-2.4/14y= 1/10-3 11/30 +1 7/25