a+21,8 = 3,26 x 18
a+21,8 = 58,68
a = 58,68 - 21,8
a = 36,88
6312,7-a = 0,67 x 6,5
6321,7-a = 4,355
a = 6321,7 - 4,355
a = 6317,345
Học tốt
a+21,8=3,26x18
a+21,8=58,68
a =58,68-21,8
a =36,88
6312,7-a=0,67x6,5
6312,7-a=4,355
a=6312,7-4,355
a=6308,345
a+21,8 =3,26x18 6312,7-a= 0,67x6,5
a+21,8 =58,68 6312,7-a= 4,355
a =58,68-21,8 a= 6312,7 - 4,355
a =36,88. a= 6308,345
\(a.a+21,8=3,26\times18\)
\(\Rightarrow a+21,8=58,68\)
\(\Rightarrow a=58,68-21,8\)
\(\Rightarrow a=36,88\)
\(b.6312,7-a=0,67\times6,5\)
\(\Rightarrow6312,7-a=12,06\)
\(\Rightarrow a=6312,7-12,06\)
\(\Rightarrow a=619,64\)
a+21,8 =68,68
a=68,68-21,8
a=46,88
6312,7-a=4,355
a=6321-4,355
a=6308,345
