Question

ai kb mik tick cho

1/2 x 1/3 +1/3x1/4

làm thế nào để ra kq nhanh nhất 

Answer 1

1/2x1/3+1/3x1/4

=1/3x(1/2+1/4)

=1/3x3/4

=1/4

Answer 2

\(\frac{1}{2}x\frac{1}{3}+\frac{1}{3}x\frac{1}{4}\)

= \(\frac{1}{3}\)x  \(\left(\frac{1}{2}+\frac{1}{4}\right)\)

= \(\frac{1}{3}\) x \(\frac{3}{4}\)

= \(\frac{1}{4}\)

~Hok tốt~