Прошу помогите!!!!Решите плизз:

Question

Прошу помогите!!!!Решите плизз:

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Answer 1

1)(-4,8):4/15=(-4,8)*15/4=(-24/5)*15/4=-18
2)-15цел 3/7-(-18)=-15цел 3/7+18=2цел 4/7
3) 2цел 1/3*2цел 4/7=7/3*18/7=6
4)-2цел 2/3+6=3цел 1/3

Answer 2

1) - 4,8 : 4/15 = -(4 8/10 : 4/15) = -(48/10 : 4/15) = - (48*15/10*4) = - 720/40 = - 18
2) -15 3/7 - ( -18) = - 108/7 + 18 = -108/7 + 126/7 = (126 - 108) / 7 = 18/7
3) 2 1/3 * 18/7 = 7/3 * 18/7 = 126/21
4) -(2 2/3) + 126/21 = -8/3 + 126/21 = 126/21 - 56/21 = 70/21 = 10/3 = 3 1/3