Question

a) Afla numarul necunoscut din fiecare expresie, dupa exemplul oferit.

575-b×32-45=50

c-(600-315÷9)=335

(100×d-110):39=10

Answer 1

1)575-b×32-45=50
575-b×32=45+50
575-b×32=95
B×32=575-95
B×32=480
B=480:32
B=15

2)c-(600-315÷9)=335
C-(600-35)=335
C-565=335
C=565+335
C=900

3)(100×d-110):39=10
100×d-110=10×39
100×d-110=390
100×d=390+110
100×d=500
D=500:100
D=5