A) (-3/4+5/6) : (2/9-7/12) b) (-0,75+1/2) : 4/3 c) 75%+1,1 : (2/5- 1 1/2) – (1/3) mũ 2 d) 1,75 . (-16/21)-( 4 1/3 +2,25) : 158/60
A) (-3/4+5/6) : (2/9-7/12) b) (-0,75+1/2) : 4/3 c) 75%+1,1 : (2/5- 1 1/2) – (1/3) mũ 2 d) 1,75 . (-16/21)-( 4 1/3 +2,25) : 158/60
a,($\frac{-3}{4}$ +$\frac{5}{6}$ ):($\frac{2}{9}$ -$\frac{7}{12}$ )
=$\frac{1}{12}$ :$\frac{-13}{36}$
=$\frac{-3}{13}$
b,(-0,75+$\frac{1}{2}$ ):$\frac{4}{3}$
=$\frac{-1}{4}$ :$\frac{4}{3}$
=$\frac{-3}{16}$
c,75%+1,1:($\frac{2}{5}$ -1$\frac{1}{2}$ )-(²$\frac{1}{3}$)²
= $\frac{3}{4}$ + 1,1 : ($\frac{-11}{10}$ ) – $\frac{1}{9}$
= $\frac{3}{4}$ – 1 -$\frac{1}{9}$
= $\frac{-13}{36}$
d,1,75.($\frac{-16}{21}$ )-(4$\frac{1}{3}$ +2,25):$\frac{158}{60}$
= $\frac{-4}{3}$ – $\frac{79}{12}$ : $\frac{79}{30}$
= $\frac{-4}{3}$- $\frac{5}{2}$
= $\frac{-23}{6}$
A) (-3/4+5/6) : (2/9-7/12)
= 1/12 : (-13/36)
= -3/13
b) (-0,75+1/2) : 4/3
= -1/4 : 4/3
= -3/16
c) 75%+1,1 : (2/5- 1$\frac{1}{2}$) – (1/3)²
= 3/4 + 1,1 : (-11/10) – 1/9
= 3/4 – 1 – 1/9
= -13/36
d) 1,75 . (-16/21)-( 4$\frac{1}{3}$ +2,25) : 158/60
= -4/3 – 79/12 : 79/30
= -4/3 – 5/2
= -23/6