123456789 + 13 . 123 : 12 +66= ?
X x 123456789 =123456789*10*10
tìm X
123456789+123456789-123456789*123456789/123456789=y
hỏi y / 123456789=?
? =
123456789-123456789-123456789+123456789=?
123456789=123456789*123456789:123456789
123456789 X 123456789 = KHÔNG SỬ DỤNG MÁY TÍNH
( 123456789 x 5 ) + ( 1234567890 x 5 )
123456789 x 123
123456789+123456789+123456789=