ooblicz :
a)-(6 7/12-3 17/36)*(-2,7)-4 1/3 : 0,65
________________________________
-3-(-4)
b) -(-1,4)*(-5/14)- 2,2
3/5- _________________
-[20-(-7)]
c) 13,7+(-2 3/5) : 0,5-1,5*6
- ______________________
(-1/3):3 * (-9)
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a)-(6 7/12-3 17/36)*(-2,7)-4 1/3 : 0,65 -(6,6-3,5)*(-2,7)-4,3:0,65
________________________________ =-------------------------------------
-3-(-4) -3+4
= [(-6,6+3,5)*2,7-6,6]/1=-3,1*2,7-6,6=-8,37-6,6=-14,97
b) -(-1,4)*(-5/14)- 2,2
3/5- _________________ = 0,6-[-(1,4*0,4)-2,2]/-(27)=0,6-[-0,56-2,2]/-27=
-[20-(-7)]
=0,6-(-2,76)/-27=0,6-0,1=0,5
c) 13,7+(-2 3/5) : 0,5-1,5*6
- ______________________= - [ 13,7-2,6:0,5-9]/(-0,1)*(-9)=
(-1/3):3 * (-9)
=-[13,7-5,2-9]/0,9=-[-0,5/0,9]=0,6
a)
-3-(-4)=1
-( 237/36 - 125/36) * (-27/10) - 13/3 * 20/13=
= -(112/36) * (- 27/10) -20/3
= 3024/360 - 20/3
= 1008\120 - 800/120
=208/120 = 26/15
b)
-[20-(-7)]= -27
3,5- (-2,7)/ -27=
= 3,5 - 0,1= 3,4
c)
-1/3 *1/3 *(-9) = 1
13,7+ ( 2,6) :0,5 - 1,5 *6
= 18,9 - 9= 9,9