Răspuns :
c·(3+d)=140
c·d=125
c=?
c·(3+d)=140 (desfacem paranteza)
c·3+c·d=140 (c·d=125, inlocuim)
3·c +125 = 140
3·c=140-125
3·c=15
c=15:3
c=5
c·d=125
c=?
c·(3+d)=140 (desfacem paranteza)
c·3+c·d=140 (c·d=125, inlocuim)
3·c +125 = 140
3·c=140-125
3·c=15
c=15:3
c=5
C*(3+d)=140
3c +cd =140
3c + 125 = 140
3c = 140 - 125
3c = 15 ⇒ c = 15 :3
c = 5
3c +cd =140
3c + 125 = 140
3c = 140 - 125
3c = 15 ⇒ c = 15 :3
c = 5