tính nhanh: 244 x 395 -151 / 244 + 395 x 243 05/12/2021 Bởi Maya tính nhanh: 244 x 395 -151 / 244 + 395 x 243
$\dfrac{244 × 395 – 151}{244 + 395 × 243}$ $= \dfrac{244 × 395 +395 – 151}{244 + 395 × 243}$ $= \dfrac{243×395+244}{243×395+244}$ $=1$ Bình luận
$\dfrac{244 × 395 – 151}{244 + 395 × 243}$
$= \dfrac{244 × 395 +395 – 151}{244 + 395 × 243}$
$= \dfrac{243×395+244}{243×395+244}$
$=1$
Đáp án:
244×395-151
244+395×243
=243×395+395-151
243×395+244
=243×395+244
243×395+244
=1