244x395-151=96229

244+395x243=96229

k mk nha

224x395-151=223x395+395-151=223x395+224

nên: (244x395-151)/(224+395x243)=1

1 la dung do

Đáp án:

244x395-151

244+395x243

=243x395+395-151

  243x395+244

=243x395+244

  243x395+244

=1

Đáp án:

244x395-151

244+395x243

=243x395+395-151

  243x395+244

=243x395+244

  243x395+244

=1

tk cho mik nhé

etwe

giúp mik với! mik đag cần gấp ạ!

Ta có: 244.495-151=(243+1).495-151=243.495+495-151=243.495+344

= \(\dfrac{495+344}{244+395}\)(khử 243 ở tử và mẫu)

=\(\dfrac{839}{639}\)

mình k chắc nha 

\(B=\dfrac{40404}{70707}+\dfrac{244\times395-151}{244+395\times243}+\dfrac{1\times3\times5+2\times6\times10+4\times12\times20+7\times21\times35}{1\times5\times7+2\times10\times14+4\times20\times28+7\times35\times49}\\ =\dfrac{4}{7}+\dfrac{243\times395+395-151}{244+395\times243}+\dfrac{1\times3\times5\left(1+2+4+7\right)}{1\times5\times7\left(1+2+4+7\right)}\\ =\dfrac{4}{7}+\dfrac{243\times395+244}{244+395\times243}+\dfrac{3}{7}\\ =\left(\dfrac{4}{7}+\dfrac{3}{7}\right)+1\\ =1+1=2\)

a: \(A=\left[111\cdot\left(38\cdot3-133\right)\right]\cdot2018\)

\(=111\cdot\left(-19\right)\cdot2018=-4255962\)

b: \(B=\left[25\left(1+3\cdot3-5\cdot2\right)\right]:20182019\)

\(=25\left(1+9-10\right):20182019=0\)

c: \(C=\dfrac{\left[244\left(395-195\right)\right]}{122\cdot200}=\dfrac{244}{122}=2\)

d: \(D=\dfrac{355\cdot45\cdot55}{11\cdot9\cdot7}=\dfrac{355\cdot5\cdot5}{7}=\dfrac{8875}{7}\)