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(×+15)×10-100:5+90=100​

Răspuns :

Răspuns:

Salutare!:)

(x+15)×10-100:5+90=100

(x+15)×10-20+90=100

(x+15)×10-20=100-90

(x+15)×10-20=10

(x+15)×10=10+20

(x+15)×10=30

(x+15)=30:10

x+15=3

x=3-15

x=-12

Succes!