Question

Oblicz :

a) (-2.5) : 1 i 2/3 - 1.4 =

b) 1 i 2/5 * (-1 i 3/7) + 1/3 * [1+6 : (-18)]

c) zrobiłam :P

d) [-2/3 - (-1.8) : (-1 i 1/5)] : (-1/27)

No i napiszcie też obliczenia ! Z góry dzięki :*

Answer 1

a) (-2.5) : 1 i 2/3 - 1.4 = -5/2 * 3/5 - 1,4 = -1,5-1,4= -2,9
b) 1 i 2/5 * (-1 i 3/7) + 1/3 * [1+6 : (-18)] = 5/7*(-10*/7)+1/3*4/3= 2+4/9=2 i 4/9

d) [-2/3 - (-1.8) : (-1 i 1/5)] : (-1/27)=(-2/3 + 3/2) *27 = 13/6 * 27 = 58,5

Answer 2

a)(-2i1/2):5/3-4/10=(-5/2)*3/5-4/10=-15/10-4/10=-19/10=-1i9/10

b)7/5*(-10/7)+1/3*[1+(-1/3)]=-70/35+1/3*2/3=-70/35+2/9=-630/315+70/315=-560/315=-1i49/69

d)[-2/3+18/10:(-6/5)]:(-1/27)=[-2/3+18/10*(-5/6)]:(-1/27)=[-2/3+(-90/60)]:(-1/27)=

[-40/60-90/60]:(-1/27)=-130/60*(-27/1)=-13/6*(-27/1)=351/6=58i1/2