Question

tính nhanh :

c) 637 x 527 - 189  /  526 x 637 + 448

d) 677 x 874 + 251  /  678 x 874 - 623

Answer 1

c) 637 x 527 - 189=335510  /  526 x 637 + 448=335510

d) 677 x 874 + 251 =591949 /  678 x 874 - 623=591949

học tốt

Answer 2

c, 637x527-189/526x637+448=335918,116

d, 677x874+251/678x874-623=91398,5605

Answer 3

\(\frac{677\times874+251}{678\times874-623}\)

\(=\frac{677\times874+251}{677\times874+874-623}=\frac{677\times874+251}{677\times874+251}\)

\(=1\)