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.E URGENTTTT RAUUUUUU​

E URGENTTTT RAUUUUUU class=

Răspuns :

Răspuns:

a+b=450

a-b=b÷4

(b÷4+b)+b=450

b:4+2b=450

b÷4+8b÷4=1800÷4

9b÷4=1800÷4:x4

9b=1800

b=1800÷9

b=200

a+b=450

a+200=450

a=450-200

a=250