Question

Помогите плиз №609. 1) 3/8*(-4)+5=... 2) 5/9:(-1/3)-7=... 3) 2/5*(-3)-4/5=... 4) 5/12:1/4-(-1/3)=... 5) (1/2)*(-4)-5=... 6) 4/9:(-2/3)+1=

Answer 1

Ответ:

1) 3/8*(-4)+5 = 3,5

2) 5/9:(-1/3)-7 = -8 2/3

3) 2/5*(-3)-4/5 = -2

4) 5/12:1/4-(-1/3) = 2

5) (1/2)*(-4)-5 = -7

6) 4/9:(-2/3)+1 = 1/3

Answer 2

Конечно, я помогу вам с этими математическими выражениями:

1. 3/8 * (-4) + 5 = -12/8 + 5 = -3/2 + 5 = 5 - 3/2 = 10/2 - 3/2 = 7/2.

2. 5/9 : (-1/3) - 7 = 5/9 * (-3) - 7 = -15/9 - 7 = -5/3 - 7 = -5/3 - 21/3 = -26/3.

3. 2/5 * (-3) - 4/5 = -6/5 - 4/5 = (-6 - 4)/5 = -10/5 = -2.

4. 5/12 : 1/4 - (-1/3) = 5/12 * 4/1 - (-1/3) = 20/12 + 1/3 = 5/3 + 1/3 = 6/3 = 2.

5. (1/2) * (-4) - 5 = -2 - 5 = -7.

6. 4/9 : (-2/3) + 1 = 4/9 * (-3/2) + 1 = -12/18 + 1 = -2/3 + 1 = -2/3 + 3/3 = 1/3.