Question

Tính nhanh:(3+1/417)*1/762-1/139*(4+761/762)-4/(417*762)+5/139

 

Answer 1

1/254

tik nhá

Answer 2

=1/254

cho mình nhé

Answer 3

\(\frac{3+1}{417}\) hay \(3+\frac{1}{417}\) z bn? 

Answer 4

M = (3+ 1/417).1/762 - 1/139(4 +761/762) - 4/417.762 + 5/139 
= 3/762 + 1/417.762 - 4/139 - 761/139.762 - 4/417.762 + 5/139 
= 3/762 - 3/417.762 + 1/139 - 761/139.762 = 
= 1179/ 139.762 - 761/139.762 - 3/417.762 = 
= 418/139.762 - 3/417.762 =418/139.762 - 1/139.762 = 417/139.762 = 3/762 = 1/254