(677*874+251) : (678*874-623)=1

Mình không biết đúng hay sai nữa.Thông cảm

\(\frac{677\times874+251}{678\times874-623}\)\(=\frac{677\times874+251}{\left(677+1\right)\times874-623}\)\(=\frac{677\times874+251}{677\times874+1\times874-623}\)\(=\frac{677\times874+251}{677\times874+874-623}=\frac{677\times874+251}{677\times874+251}=1\)

\(\frac{677.874+251}{678.874-623}\)

\(=\frac{677.874+251}{\left(677+1\right).874-623}\)

\(=\frac{677.874+251}{677.874-1.874-623}\)

\(=\frac{677.874+251}{677.874+874-623}\)

\(=\frac{677.874+251}{677.874+251}\)

\(=1\)

Hok tốt

= 334832,36 nhé

nha,  bạn yêu

3348323628

\(\frac{637\times527-189}{526\times637+448}\)

\(=\frac{637\times\left(526+1\right)-189}{526\times637+448}\)

\(=\frac{637\times526+637-189}{526\times637+448}\)

\(=\frac{637\times526+448}{526\times637+448}\)

\(=1\)

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

\(=\frac{677\times874+251}{\left(677+1\right)\times874-623}\)

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

\(=\frac{677\times874+251}{677\times874+251}\)

\(=1\)

\(\frac{637\times527-189}{526\times637+448}\)

\(=\frac{526\times637+637-189}{526\times637+448}=\frac{526\times637+448}{526\times637+448}=1\)

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

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

học tốt

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

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

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

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

\(=1\)

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2 nick là 1 ng ??????

\(\frac{637x527-189}{526x637+448}\)

\(=\frac{527-189}{526+448}\)

\(=\frac{526-188}{526+448}\)

\(=\frac{188}{448}=\frac{47}{112}\)

111+1+156+4+74+78+678+874+698+47+8478=11195

677*874+251=591949

678*874-623=591949

=591949

kêt quả là 591949 bạn nha