Wykonaj obliczenia:
a) 5¹⁷/₂₄-(-2³/₈)
b) 3¹/₄*(-0,4)+3¼*(-15,6)
c) (5⁴/₁₅-3⁷/₂₄):0,8
a)
5 17/24-(-2 3/8)=5 17/24+2 3/8=5 17/24+2 9/24=7 26/24=8 1/12
b)
3 1/4*(-0,4)+3 1/4*(-15,6)=3,25*(-0,4)+3,25*(-15,6)= -1,3-50,7=-52
c)
(5 4/15-3 7/24):0,8=(79/15-79/24):0,8=(632/120-395/120):0,8=237/120:0,8=
237/120:8/10=237/120*10/8=237/120*5/4=237/96=2 45/96
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a)
5 17/24-(-2 3/8)=5 17/24+2 3/8=5 17/24+2 9/24=7 26/24=8 1/12
b)
3 1/4*(-0,4)+3 1/4*(-15,6)=3,25*(-0,4)+3,25*(-15,6)= -1,3-50,7=-52
c)
(5 4/15-3 7/24):0,8=(79/15-79/24):0,8=(632/120-395/120):0,8=237/120:0,8=
237/120:8/10=237/120*10/8=237/120*5/4=237/96=2 45/96