Afla Nr necunoscut.
12+13-x=14
72:2=54
95-(7xa)=60
78-(x+21)=46
10x3-2xa=14
a:(63:7)+1=10
10x3-2xa=14
a:(63:7)+1=10
(ax5):2=40:4
(b:3)X6=52-4
9x (c:6)=6 X6
60-(ex9)=30:5​