Question

помогите с матиматикой 6класс пж!!​

Answer 1

здравствуй, вот решение.

1) 2 1/2 (2/15-3 5/6) - 2 3/4 = -12

5/2*(2/15-23/6) - 11/4 = 5/2 * (-37/10) - 11/4 = -1/2*37/2-11/4 = -37/4-11/4 = -12

2) -1 1/7 (4/5+19/20) * (6 5/6 + 4 2/3) = -23

-8/7 * 7/4 ((6+4)+(5/6+2/3))

-2(10+3/2) = -2(10+1+1/2) = -2(11+1/2) = -2*11 1/2 = -2*23/2 = -23

3) ( 6 3/8 - 2 3/4) (-4) + 7/18 * 9 = -11

(51/8-11/4)(-4)+7/2 = 29/8(-4)+7/2 = -29/2 +7/2 = -11

4) 9 1/6:(4 1/3-8)+24*3/8 = 13/2

55/6:(13/3-8)+3*3 = 55/6:(-11/3)+9= -55/6*3/11+9 = -5/2+9 = 13/2