Răspuns :
Răspuns:
(25xa+250):(35:7)-25=75
(25a+250):5=75+25
5a+50=100
5a=100-50
5a=50
a=50:5
a=10
(25xa+250):(35:7)-25=75
(25a+250):5=75+25
(25a+250):5=100
25a+250=5x100
25a+250=500
25a=500-250
25a=250⇒a=250:25⇒10✔
Răspuns:
(25xa+250):(35:7)-25=75
(25a+250):5=75+25
5a+50=100
5a=100-50
5a=50
a=50:5
a=10
(25xa+250):(35:7)-25=75
(25a+250):5=75+25
(25a+250):5=100
25a+250=5x100
25a+250=500
25a=500-250
25a=250⇒a=250:25⇒10✔