Răspuns:
y:9+25-3= 8-3+25
y:9+25-3 = 5+25
y:9+25-3 = 30
y:9 = 30+3-25
y:9 = 33-25
y:9 = 8
y = 8•9
y = 72
8•m+26 = 3•30
8m+26 = 90
8m = 90-26
8m = 64
m = 64:8
m = 8
a•9-23 = 70:7•4
a•9-23 = 10•4
a•9-23 = 40
a•9 = 40+23
a•9 = 63
a = 63:9
a = 7
EVERGREEN