Răspuns :
a x 5 = 35
a = 35 : 5
a = 7
7 x 5 = 35
5 x a = 40
a = 40 : 5
a = 8
5 x 8 = 40
a : 5 = 8
a = 8 x 5
a = 40
40 : 5 = 8
45 : a = 5
a = 45 : 5
a = 9
45 : 9 = 5
a x 4 = 36
a = 36 : 4
a = 9
9 x 4 = 36
a : 4 = 7
a = 7 x 4
a = 28
28 : 4 = 7
7 x a = 21
a = 21 : 7
a = 3
7 x 3 = 21
a : 3 = 8
a = 8 x 3
a = 24
24 : 3 = 8 .
Succes ! ^^
a = 35 : 5
a = 7
7 x 5 = 35
5 x a = 40
a = 40 : 5
a = 8
5 x 8 = 40
a : 5 = 8
a = 8 x 5
a = 40
40 : 5 = 8
45 : a = 5
a = 45 : 5
a = 9
45 : 9 = 5
a x 4 = 36
a = 36 : 4
a = 9
9 x 4 = 36
a : 4 = 7
a = 7 x 4
a = 28
28 : 4 = 7
7 x a = 21
a = 21 : 7
a = 3
7 x 3 = 21
a : 3 = 8
a = 8 x 3
a = 24
24 : 3 = 8 .
Succes ! ^^
a×5=35=
a=35:5=
a=7
5×a=40
a=40:5
a=8
a÷5=8
a=8×5
a=40
45÷a=5
a=45÷5
a=9
a×4=36
a=36÷4
a=9
a÷4=7
a=4×7
a=28
7×a=21
a=21÷7
a=3
a÷3=8
a=3×8
a=24
Sa imi dai coroana
a=35:5=
a=7
5×a=40
a=40:5
a=8
a÷5=8
a=8×5
a=40
45÷a=5
a=45÷5
a=9
a×4=36
a=36÷4
a=9
a÷4=7
a=4×7
a=28
7×a=21
a=21÷7
a=3
a÷3=8
a=3×8
a=24
Sa imi dai coroana