a=5/3-3/7
a= 5/3 ( amplifici cu 7) - 3/7 ( amplifici cu 3)
a=35/21- 9/21
a=26/21
b=1/3+3/7
b=1/3 ( amplifici cu 7)+ 3/7 (amplifici cu 3)
b=7/21+ 9/21
b=16/21
M (indice) a= a+b/2
M ( indice) a= 26/21+16/21 // 2
M ( indice) a= 42/21 //2
M (indice) a= 2/2
M ( indice) a= 1
// = linie mare de fractie
ex: 26 16 42 =) exercitiul tau (=
-- + -- -----
21 21 21 2
________ = _________ = ____ = 1
2 2 2
Sper ca te-am ajutat... coronita?