Salut!
Află termen necunoscut:
[tex]1)a + 23 = 41[/tex]
[tex]a = 41 - 23[/tex]
[tex] \boxed {a =18 }.[/tex]
[tex]2)72 - a = 36[/tex]
[tex]a = 72 - 36[/tex]
[tex] \boxed {a = 36}[/tex]
[tex]3)58 + a = 80[/tex]
[tex]a = 80 - 58[/tex]
[tex] \boxed {a = 22}.[/tex]
[tex]4)a - 52 = 39[/tex]
[tex]a = 39 + 52[/tex]
[tex] \boxed {a =91 }.[/tex]
