2x(a+3)+1=a+25 Va rog sa ma ajutati !!!


Răspuns :

2 (a+3)+1=a+25
2 a +6 +1=a+25
2 a +7=a+25
a=18

2x(a+3)+1=a+25
2a+6+1=a+25
2a+7=a+25
2a=a+25-7
2a=a+18
a=18