ответ 4904
16016:4+180×5= 4904
1) 31/60+(7/20+11/60)=31/60+(21/60+11/60)=31/60+32/60=63/60=1 3/60=1 1/20
2) 53/54-(1/6+7/9)=53/54-(9/54+42/54)=53/54-51/54=2/54=1/27
3) 13/35+(23/35-2/7)=13/35+(23/35-10/35)=13/35+13/35=26/35
4) 7/16-(3/4-5/16)=7/16-(12/16-5/16)=7/16-7/16=0
- 3 (х - 5) - 5(х + 4) = - 4(х - 6) - (- х + 5)
-3х + 15 - 5х - 20 = - 4х + 24 + х - 5
-3х - 5х + 4х - х = 24 - 5 - 15 + 20
- 5х = 24
х = 24 / -5
х = - 4,8
1) =550+52=602
2) =900-87×6=900-522=378
3) =696-102÷3=696-36=660