Question

1,4+3,6 умножить (- 6 5/18 -1 4/15+ 5 3/5) (3 5/18-7 1/12+2 5/9) :1.9-1

Answer 1

1) 1,4+3,6*(-6 5/18-1 4/15+5 3/5)=-5,6
    -6 5/18-1 4/15+5 3/5=-6 25/90-1 24/90+5 54/90=-7 49/90+5 54/90=-1 85/90
   =-1 17/18
   3,6*-1 17/18=36/10*-35/18=-14/2=-7
   1,4+(-7)=-5,6
2) (3 5/18-7 1/12+2 5/9):1,9-1=
    3 5/18-7 1/12+2 5/9=3 10/36-7 3/36+2 20/36=-1 9/36=-1 1/4
   -1 1/4:1.9=-5/4:19/10=-5/4*10/19=-25/38
   -25/38-1=-1 25/38
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может и неправильно, я не уверен

Answer 2

To solve the given expression, let's break it down step by step:

Step 1: Simplify the mixed numbers within the parentheses:

(-6 5/18 - 1 4/15 + 5 3/5) = (-6 10/36 - 1 8/30 + 5 18/30) = (-6 5/18 - 1 4/15 + 5 3/5) = (-6 25/90 - 1 24/90 + 5 54/90) = (-6 - 1 - 5) + (25/90 + 24/90 + 54/90) = -12 + (103/90) = -12 + 1 + (13/90) = -11 + (13/90) = -11 13/90

(3 5/18 - 7 1/12 + 2 5/9) = (3 10/36 - 7 3/36 + 2 20/36) = (3 5/18 - 7 1/12 + 2 5/9) = (3 25/90 - 7 15/90 + 2 40/90) = (3 - 7 + 2) + (25/90 - 15/90 + 40/90) = -2 + (50/90) = -2 + 1 + (20/90) = -1 + (20/90) = -1 20/90

Step 2: Perform the multiplication:

(-11 13/90) * (-1 20/90) = (-11 - 13/90) * (-1 - 20/90) = (-(1190 + 13)/90) * (-(190 + 20)/90) = (-(990 + 13)/90) * (-(90 + 20)/90) = (-1003/90) * (-110/90) = (1003/90) * (110/90) (multiplying two negative numbers gives a positive result) = (1003 * 110)/(90 * 90) = 110330/8100 = 137/10

Step 3: Perform the division:

(137/10) : (1.9 - 1) = (137/10) : (0.9) = (137/10) / (9/10) = (137/10) * (10/9) = (137 * 10)/(10 * 9) = 137/9

Therefore, the solution to the given expression 1,4 + 3,6 * (- 6 5/18 - 1 4/15 + 5 3/5) (3 5/18 - 7 1/12 + 2 5/9) : 1.9 - 1 is 137/9.