aaaa+aaa+aa+a=1234
=>a*1000+a*100+a*10+a*1+a*100+a*10+a*1+a*10+a*1+a*1=1234
=>a*(1000+100+10+1+100+10+1+10+1)=1234
=>a*1234=1234
=>a=1234:1234=1
aaaa + aaa + aa + a = 1234
a x 1000 + a x 100 + a x 10 + a + a x 100 + a x 10 + a + a x 10 + a + a = 1234
a x 1234 = 1234
a = 1234 : 1234
a = 1
ủng hộ mk nha
ax1111+ax111+ax11+a=1234
ax1234=1234
a=1234:1234=1
bạn k cho mình thi mình còn k lại cho
aaaa+aaa+aa+a=1234
a*1111+a*111+a*11+a*1=1234
a*1234=1234
a=1234/1234
a=1
