реши уравнение любым способом. 15*(a-4)=42+8*(a-4) (y+1)*18=36+12*(y+1) (k+5)*7-54=(k+5)*4 17*(c-2)-36=19+(c-2)*12. Created by guzenkojlga2016. matematika-ru

реши уравнение любым способом. 15*(a-4)=42+8*(a-4) (y+1)*18=36+12*(y+1) (k+5)*7-...

Vobamoroz 1)15*(а-4)=42+8*(а-4) 2)(у+1)*18=36+12*(у+1)
15а-60=42+8а-32 18у+18=36+12у+12
15а-8а=10+60 18у-12у=48-18
7а=70 6у=30
а=70/7 у=30/6
а=10 у=5
_______________________________________________
3) (k+5)*7-54=(k+5)*4 4) 17*(с-2)-36=19+(с-2)*12
7k+35-54=4k+20 17с-34-36=19+12с-24
7k-4k=20+54-35 17с-12с=-5+34+36
3k=39 5с=65
k=39/3 с=65/5
k=13 с=13

guzenkojlga2016 спасибо

Vobamoroz ))

Answers & Comments

3s pervoj tarelki seli v 3 raza menshe chem s tretej so vtoroj na 12 menshe

naimenshee pyatiznachnoe chislo uvelichili v 7 raz kakoe chislo poluchili 1700000 2

pomogite pozhalujsta vypolni dejstviya 63m3 89dm3 147 8let 5mes 12let 9mes

s lyubym iz novyh slovosochitanij sostavte rasprostranennoe povestvovatelnoe nev

ploshad odnoj klumby5m2 20dm2 drugoj 260 dm2 vo skolko raz odna klumba bolshe d

massa dvuh odinakovyh lukovic menshe chem massa tryoh takih zhe lukovic na 80gr kak

sdelat predlozhenie polozhitelnoe i didnt phone you yesterday my mother d

pomogite pozhalujsta ochen srochno sdelat predlozhenie otricatelnymobshij vopros

otpravivshis v pohod shkolniki cherez nekotoroe vremya sdelali prival posle nego3c2de833e51409fe4993bdd3acdb7116 70777

vypolni vychisleniya 3ch 45 min 7 min 30 s

рекомендуемые вопросы

Helpful Links

Helpful Social