Question

oblicz:

(-3 1/8)+2 5/6=

(-12 3/5)+(-12/5)=

(-3 2/3)+(-1/5)=

4 11/40-(-7 7/20)=

-3/4-(-3/4)-(-1/6)=

(-8/9)*(-27/16)=

(-1 2/26)*(-45 1/2)=

Daje naj xD. Z góry dzieki.

Answer 1

(-3 1/8)+2 5/6= -25/8 + 17/6 = -75/24 + 68/24 = -7/24

(-12 3/5)+(-12/5)= (-63/5)+(-12/5)= -75/5 = -15

(-3 2/3)+(-1/5)= (-11/3)+(-1/5)=(-55/15)+(-3/15)=(-52/15)= -3 7/15

4 11/40-(-7 7/20)= 4 11/40 + 7 7/20= 4 11/40 + 7 14/40= 11 3/40

   -3/4-(-3/4)-(-1/6)= - 3/4 + 3/4 + 1/6 = 0 + 1/6 = 1/6

(-8/9)*(-27/16)= 3/2 = 1 1/2

(-1 2/26)*(-45 1/2)= -28/26 * -91/2 = 2366/26 = 91