Răspuns :
(a + 13 ) : 3 + 22 = 30
( a + 13 ) : 3 = 30 - 22
( a + 13 ) : 3 = 8
a + 13 = 8 × 3
a + 13 = 24
a = 24 - 13
a = 11
( a + 13 ) : 3 = 30 - 22
( a + 13 ) : 3 = 8
a + 13 = 8 × 3
a + 13 = 24
a = 24 - 13
a = 11
Salut,
[( a + 13 ) ÷ 3 ] + 22 = 30
a = [( 30 - 22 ) × 3 ] - 13
a = ( 8 × 3 ) - 13
a = 24 - 13
a = 11
Proba:
[( 11 + 13 ) ÷ 3 ] + 22 =
( 24 ÷ 3 ) + 22 =
8 + 22 =
30
[tex] Răspuns _ a => 11 \\ \\ Eckram [/tex]
[( a + 13 ) ÷ 3 ] + 22 = 30
a = [( 30 - 22 ) × 3 ] - 13
a = ( 8 × 3 ) - 13
a = 24 - 13
a = 11
Proba:
[( 11 + 13 ) ÷ 3 ] + 22 =
( 24 ÷ 3 ) + 22 =
8 + 22 =
30
[tex] Răspuns _ a => 11 \\ \\ Eckram [/tex]