Question

Tìm a, biết a : 2 + a : 4 + a : 3 + 2890 = 3528?

Answer 1

 ta có a/2 + a/4 + a/3=3528-2890= 638 
<=> 6a + 3a + 4a =12.638 
<=> 13a=7656 
<=> a=7656/13=588,92

k mk nha!!!

Answer 2

a : 2 + a : 4 + a : 3 + 2890 = 3528

; a : ( 2 + 4 + 3) = 3528 - 2890

; a : 9 = 638

; a = 638 x 9

; a = 5742

Answer 3

a : 2 + a : 4 + a : 3 + 2890 = 3528

\(\left(\frac{1}{2}+\frac{1}{3}+\frac{1}{4}\right)xa=3528-2890\)

\(\frac{13}{12}xa=638\)

\(a=638:\frac{13}{12}=\frac{7656}{13}\)