q = (1/99+12/999+123/999)*(1/2-1/3-1/6)

= (1/99+12/999+123/999) * 0

= 0

Q=(1/99+12/999+123/999)x0

Q=0

\(Q=\left(\frac{1}{99}+\frac{12}{999}+\frac{123}{999}\right).\left(\frac{1}{2}-\frac{1}{3}-\frac{1}{6}\right)\))

\(Q=\left(\frac{1}{99}+\frac{12}{999}+\frac{123}{999}\right).0=0\)

Q=(1/99+12/999+123/999)x(1/6-1/6)

Q=(1/99+12/999+123/999)x0

Q=0

học tốt!

A=(1/99+12/999+123/999)x(1/2-1/3-1/6)

=(1/99+12/999+123/999)x(3/6-2/6-1/6)

=(1/99+12/999+123/999)x0

=0

\(Q=\left(\frac{1}{99}+\frac{12}{999}+\frac{123}{999}\right)\left(\frac{1}{2}-\frac{1}{3}-\frac{1}{6}\right)\)

\(Q=\left(\frac{1+12+123}{999}\right)\left(\frac{3}{6}-\frac{2}{6}-\frac{1}{6}\right)\)

\(Q=\left(\frac{136}{999}\right)\left(\frac{0}{6}\right)\)

\(Q=0\)

Có: \(Q=\left(\frac{1}{99}+\frac{12}{999}+\frac{123}{999}\right).\left(\frac{1}{2}-\frac{1}{3}-\frac{1}{6}\right)\)

\(=\left(\frac{1}{2}+\frac{12}{999}+\frac{123}{999}\right).\left(\frac{3}{6}-\frac{2}{6}-\frac{1}{6}\right)\)

\(=\left(\frac{1}{2}+\frac{12}{999}+\frac{123}{999}\right).0=0\)

1/2-1/3-1/6=0=>A=0

Thank you, bài này cũng dễ nhỉ

Chỉ cần tính 1/2-1/3-1/6=6/12-4/12-2/+2=0/12=0

Suy ra (1/99+12/999+123/9999).(1/2-1/3-1/6)=(1/99+12/999+123/9999).0=0

Vậy kết quả là 0.

mk nha

(1/99+12/999-123/9999).(1/2-1/3-1/6)

=(9/407-123/9999).0

=0