(4.1\8-3.1\8: (4.5\12-2.13\24)+ 19: 6) · 1.5\7=

(4.1\8-3.1\8:(4.5\12-2.13\24)+ 19:6) · 1.5\7=

решение

(4,1/8-3,1/8/(4,5/12-2,13/24)+ 19/6)*1,5\7=

1)(4,5/12-2,13/24)=(4,5*200-2,13*100)/2400=687/2400

2) 3,1/8/(687/2400)=31*2400/(687*80)

3) 4,1/8-31*2400/(687*80)=(687*41-31*2400)/(687*80)=-46233/(687*80)

4) -46233/(687*80)+19/6=(-46233+19*9160)/(687*80)=127807/(687*80)

5)127807/(687*80)*1,5/7=127807/(687*80)*15/70=127807*15/(687*80*70)=0,498

(4,1/8-3,1/8/(4,5/12-2,13/24)+ 19/6)*1,5\7=0,5

1) 106\24 - 61/24 = 45/24

2) 25/8 * 24/45 = 5/3

3) 33/8 - 5/3 = 59/24

4) 59/24 + 19/6 = 135/24

5) 135/24 * 12/7= 9. 9/14