a x 4 + a x 5 + a = 290
a x 10 = 290
a = 290 : 10
a = 29
Tìm a biết :
a x 4 + a x 5 + a = 290
a x ( 4 + 5 + 1 ) = 290
a x 10 = 290
a = 290 : 10
a = 29
Vậy a = 29
Tìm a biết :
a x 4 + a x 5 + a = 290
a x ( 4 + 5 + 1 ) = 290
a x 10 = 290
a = 290 : 10
a = 29
Vậy a = 29
a*4+a*5+a=290
a*4+a*5+a*1=290
a*[4+5+1]=290
a*10=290
a=290:10
a=29
k minh di ket ban nua
a x 4 + a x 5 + a =290
a x 4 + a x 5 + a x 1 =290
a x (4+5+1) =290
a x 10 =290
a =290 : 10
a =29
a x 4 + a x 5 + a = 290
a x 4 + a x 5 + a x 1 = 290
a x ( 4 + 5 + 1 ) = 290
a x 10 = 290
a = 290 : 10
a = 29
a * 4 + a * 5 + a = 290. a * ( 4 + 5 + 1 ) = 290. a * 10 = 290. a = 290 : 10. a = 29.
a x 4 + a x 5 + a x 1 = 290
a x ( 4 + 5 + 1 ) = 290
a x 10 = 290
a = 29
\(a\times4+a\times5+a=290\)
\(a\times\left(4+5+1\right)=290\)
\(a\times10=290\)
\(a=29\)
