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Ex. 17 Ajutor dau coroana!

Ex 17 Ajutor Dau Coroana class=

Răspuns :

a)423+96=519
519-234=285
285-48=237
237+145=382
b)700-d=361,d=700-361
d=339
c-95=339,c=339+85
c=424
b+158=424,b=424-158
b=266
a-645=266,a=266+645
a=911