Răspuns :
a+b=60+a => b=60
a+b=76+b => a=76
76:4=19
60:2=30
19+30=49 => raspuns a)
a+b=76+b => a=76
76:4=19
60:2=30
19+30=49 => raspuns a)
x,y cele două nr.
x+y=60+x
y=60
x+y=76+y
x=76
1/4×76+1/2×60=76/4+60/2=19+30=49
a)
x+y=60+x
y=60
x+y=76+y
x=76
1/4×76+1/2×60=76/4+60/2=19+30=49
a)