1000+900

Ta có: \(2\cdot47\cdot12+8\cdot3\cdot25+28\cdot4\cdot6\)

\(=24\cdot47+24\cdot25+24\cdot28\)

\(=24\cdot\left(47+25+28\right)\)

\(=24\cdot100=2400\)

\(\frac{16.17-5}{16.16+11}\)

\(=\frac{16.16+16-5}{16.16+11}\)

\(=\frac{16.16+11}{16.16+11}\)

\(=1\)

\(\frac{16\cdot17-5}{16\cdot16+11}\)

\(=\frac{16\cdot17-5}{16\cdot17-16-11}\)

\(=\frac{16\cdot17-5}{16\cdot17-5}\)

\(=1\)

mk ko copy của Trần Thùy Dung nhé

\(\frac{1}{95}\frac{1}{95}\)

là sao ???

\(\frac{x-1}{99}+\frac{x-2}{98}+\frac{x-5}{95}=3+\frac{1}{99}+\frac{1}{98}+\frac{1}{95}\)

\(\frac{x-1}{99}+\frac{x-2}{98}+\frac{x-5}{95}=\frac{2765070}{921690}+\frac{9310}{921690}+\frac{9405}{921690}+\frac{9702}{921690}\)

\(\frac{x-1}{99}+\frac{x-2}{98}+\frac{x-5}{95}=\frac{2793487}{921690}\)

\(BCNN\left(99,98,95\right)=921690\Rightarrow x=101\)

\(\frac{5}{16}+\frac{5}{7}+0,4+\frac{1}{6}-\frac{4}{35}\)

= \(\frac{5}{16}+\frac{25}{35}+\frac{2}{5}+\frac{1}{6}-\frac{4}{35}\)

= \(\frac{5}{16}+\frac{2}{5}+\frac{1}{6}+\frac{25}{35}-\frac{4}{35}\)

= \(\frac{5}{16}+\frac{2}{5}+\frac{1}{6}+\frac{2}{3}\)

= \(\frac{5}{16}+\frac{2}{5}+\frac{5}{6}\)

= \(\frac{5}{16}+\frac{37}{30}\)

= \(\frac{371}{240}\)

\(34,8:\left(1,5.1,2+1,6\right)-\frac{5,7}{3}\)

=\(34,8:3,4-\frac{5,7}{3}\)

=\(\frac{1417}{170}\)

\(6\frac{5}{7}-\left(1\frac{3}{4}+2\frac{5}{7}\right)\)

\(=6\frac{5}{7}-1\frac{3}{4}-2\frac{5}{7}\)

\(=\left(6\frac{5}{7}-2\frac{5}{7}\right)-1\frac{3}{4}\)

\(=4-1\frac{3}{4}\)

\(=2\frac{1}{4}\)

\(6\frac{5}{7}-\left(1\frac{3}{4}+2\frac{5}{7}\right)\)

\(=6\frac{5}{7}-1\frac{3}{4}-2\frac{5}{7}\)

\(=\left(6\frac{5}{7}-2\frac{5}{7}\right)-1\frac{3}{4}\)

\(=4-\frac{7}{4}\)

\(=\frac{16}{4}-\frac{7}{4}\)

\(=\frac{9}{4}\)

=   \(6\frac{5}{7}-1\frac{3}{4}-2\frac{5}{7}=6\frac{5}{7}-2\frac{5}{7}\)\(-1\frac{3}{4}\)=   \(4-1\frac{3}{4}\)=\(\frac{9}{4}\)

47/7 - (7/4 + 19/7) =47/7 -125/28 =gomen =tao xin lỗi chịu rùi = <3

^{6^2.4.3+3+3.5^3}

^{=36.4.3+3+3.125}

^{=36.4.3+3+3.1+3.125}

^{=3.(36.4+1+125)}

^{=3.(144+1+125)}

^=3.280

⁼⁸⁴⁰

45 × 16 - 17 / 28 + 45 × 15

= 45 × (15 + 1) - 17 / 28 + 45 × 15

= 45 × 15 + (45 - 17) / 28 + 45 × 15

= 45 × 15 + 28 / 28 + 45 × 15

= 1

\(\frac{45\times16-17}{28+45\times15}\)

\(=\frac{45\left(15+1\right)-17}{28+45\times15}\)

\(=\frac{45\times15+\left(45-17\right)}{28+45\times15}\)

\(=\frac{45\times15+28}{28+45\times15}\)

\(=1\)