Tính a) -1,6 : (1 + 2/3) b) 7/30 + -12/37 + 5/25 + -25/37 + 23/30
Giải thích
a) −1,6:1+23=−1610:33+23=−1610:53=−1610.35=−16.310.5=−8.35.5=−2425.
b) 730+−1237+525+−2537+2330 =730+2330+−1237+−2537+525 =3030+−3737+15=1+−1+15=15.
a) −1,6:1+23=−1610:33+23=−1610:53=−1610.35=−16.310.5=−8.35.5=−2425.
b) 730+−1237+525+−2537+2330 =730+2330+−1237+−2537+525 =3030+−3737+15=1+−1+15=15.