Question

A) (Xx3 47)-315=146 B) (X:6-528)+307=517 C) (X:3-3)x9=306 D) (X:2)x3=30x3 E) (7x9-Xx5)-9:3=20 imi puteti rezolva?

Answer 1

pun * in loc de orila a nu mi dau seama ce daca e 347 sau trebuia sa fie un semn acolo ,asa ca trec la b) 
(x:6-528)+307=517 |-307 
x:6-528=210 |+528 
x:6=738
x=738*6=4428
c) (x:3-3)*9=306 |:9
x:3-3=34 |+3
x:3=37
x=37*3=111
d) (x:2)*3=30*3
(x:2)*3=90 | :3
x:2=30x=60
e) 7*9-x*5=23
63-x*5=23 |+63
x*5=86
x= 86/5=17,2