Question

rezorlvare la:
120+4×[40+(a+320)÷4]-16=600
vă rog repede!​

Answer 1

Răspuns:

120+4×[40+(a+320)÷4]-16=600

4·[40+(a+320):4]=600-120+16

40+(a+320):4=496:4

(a+320):4=124-40

a+320=84·4

a=336-320

a=16

Answer 2

Răspuns:

120+4×(40+320+a÷4)-16=600

120+4×(40+80+a)-16=600

120+4×120+a-16=600

120+480+a-16=600

600+a-16=600

584+a=600

a=600-584

a=16

Explicație pas cu pas:

Verificare:

120+4×[40+(16+320)÷4]-16=

120+4×(40+336÷4)-16

120+4×(40+84)-16

120+4×124-16

120+496-16

616-16

=600