Question

\(\left[\left(-20,83\right).0,2+\left(-9,17\right).0,2\right]:\left[2,47.0.5-\left(-3.53\right).0,5\right]\)

Tính nhanh nha

Giúp mình với nha

Answer 1

\(\left[\left(-20,83\right).0,2+\left(-9,17\right).0,2\right]:\left[2,47.0,5-\left(-3.53\right).0,5\right]\)

\(=\left\{0,2.\left[\left(-20,83\right)+\left(-9,17\right)\right]\right\}:\left[2,47.0,5+3,53.0,5\right]\)

\(=\left[0,2.\left(-30\right)\right]:\left[0,5.\left(2,47+3,53\right)\right]\)

\(=\left(-6\right):\left(0,5.6\right)\)

\(=\left(-6\right):3\)

\(=\left(-2\right)\)

Answer 2

[ (-20,83) . 0,2 + (-9,17) . 0,2 ] : [ 2,47 . 0,5 - (-3.53) . 0,5 ]

= [\(\frac{-2083}{500}\) + \(\frac{-917}{500}\) ] [ \(\frac{247}{200}-\frac{-353}{200}\) ]

= -6 : 3 = -2