Question

43 × 166 + 14 × 83 và 7/2- 3/2 : x = 5/4

Answer 1

   43 x 166 + 14 x 83 

= 43 x ( 83 x 2 ) + 14 x 83

= (43 x 2) x 83 + 14 x 83

= 86 x 83 + 14 x 83

= ( 86 + 14 ) x 83

= 100 x 83

= 8300

Answer 2

43 x 166 + 14 x 83

= 43 x ( 83 x 2 ) + 14 x 83

= ( 43 x 2 ) x 83 + 14 x 83

= 86 x 83 + 14 x 83

= 83 x ( 86 + 14 )

= 83 x 100

= 8300

\(\frac{7}{2}\)- \(\frac{3}{2}\): x = \(\frac{5}{4}\)

\(\frac{3}{2}\): x = \(\frac{7}{2}-\frac{5}{4}\)

\(\frac{3}{2}\): x = \(\frac{14}{4}-\frac{5}{4}\)

\(\frac{3}{2}\): x = \(\frac{9}{4}\)

           x = \(\frac{3}{2}:\frac{9}{4}\)

           x = \(\frac{3}{2}x\frac{9}{4}\)

           x = \(\frac{27}{8}\)