Question

Oblicz (-4/5)*(-15)-1 1/3 *(-1,2)= -3 3/5 : (-3/5)*5= -3:[(-3/5) *5]= 1,8:[(-0,2) * 0,3]= 1,8:(-0,2)*0,3= -2,4* 3/7-4,6* 3/7= -5,6*0,75-2 2/5*0,75= -6+6*(1 1/2-2,5)= 9:1,5-[(-2,7)*(-2/18)-3/20 *2]= (1 1/3)*0,75-(-1,25)*(0,8)= -2,75-1/4*6,4= -(1,2* 5/12 -0,8):(-1/8)+6,4= 0,76:1 1/3-0,21 3/5+0,555= -4,75*[7/5 :(1,4)]-3/8 +5/8= 2,5-4*1 3/4+2,5*2,5: 5/12= -3/5 *3,5+4,2*(1 1/6)=

Answer 1

(-4/5)*(-15)-1 1/3*(-1,2)=60/5-1 1/3*(-12/10)=12-1 1/3*(-12/10)=10 2/3*(-12/10)=32/3*(-12/10)=-128/10=-12 8/10=-12 4/5

-3 3/5:(-3/5)*5=-18/5*(-5/3)*5=18/3*5=90/3=30

-3:[(-3/5*5)]=-3:(-3/5*5)=-3:(-15/5)=-3*(-5/15)=15/15=1

1,8:[(-0,2)*0,3]=1,8:[(-2/10)*3/10]=18/10:(-6/100)=18/10*(-100/6)=-30/1=-30

1,8:(-0,2)*0,3=18/10*(-10/5)*3/10=-18/5*3/10=-54/50=1 4/50=1 2/25

-2,4*3/7-4,6*3/7=-24/10*3/7-46/10*3/7=-72/70-138/70=-210/70=-3

-5,6*0,75-2 2/5*0,75=-56/10*75/100-12/5*75/100=-4200/1000-900/500=-2100/500-900/500=-3000/500=-6

-6+6*(1 1/2-2,5)=-6+6*(3/2-25/10)=-6+6*(15/10-25/10)=-6+6*(-10/10)=-6+6=0

9:1,5-[(-2,7*(-2/18)-3/20*2]=9*10/15-[27/10*-2/18)-3/20*2]=90/15-(54/180-6/20)=90/15-(54/180-54/180)=90/15=6

(1 1/3)*0,75-(-1,25)*0,8=4/3*75/100-(-125/100)*8/10=75/75-(-1000/1000)=1-(-1)=-2

-2,75-1/4*6,4=-275/100-1/4*64/10=-275/100-16/10=-275/100-160/100=-435/100=-4 35/100

-(1,2*5/12-0,8):(-1/8)+6,4=-(12/10*5/12-8/10):(-1/8)+64/10=-(60/120-8/10):(-1/8)+64/10=-(5/10-8/10)*(-8/1)+64/10=-(-13/10)*(-8/1)+64/10=104/10+64/10=168/10=16 4/5