(4.18-3.18:(4.512-2.1324)+ 19:6) · 1.57=

1) 10624 - 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

(4.18-3.18:(4.512-2.1324)+ 19:6) · 1.57=

решение

(4,1/8-3,1/8/(4,5/12-2,13/24)+ 19/6)*1,57=

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

Ответ:

(4,1/8-3,1/8/(4,5/12-2,13/24)+ 19/6)*1,57=0,5