100 : {250 : [450 – (4 . 125 – 4 . 25)]}
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\(=100:\left[250-450+4\cdot125-8\cdot25\right]\\ =100:\left[-250+500-200\right]=100:50=2\)
\(d,100:\left\{250:\left[450-\left(4.53-22.25\right)\right]\right\}\)
\(100:\left\{250:\left[450-\left(4.5^3-3^2.25\right)\right]\right\}\)
\(100:\left\{250:\left[450-175\right]\right\}\)
\(100:\left\{250:275\right\}\)
\(=100:\dfrac{10}{7}\)
\(=100.\dfrac{7}{10}\)
\(=70\)
100:{250:[450-(4 . 53-22 . 25 ] }
=100:{250:[450-(500-100)])
=100:{250:[450-400])
=100:{250:50}
=100:5
=20
\(100\div\left\{250\div\left[450-\left(4\times5^2-2^2\times25\right)\right]\right\}\)
\(=100\div\left\{250\div\left[450-\left(4\times25-4\times25\right)\right]\right\}\)
\(=100\div\left\{250\div\left[450-0\right]\right\}\)
\(=100\div\frac{250}{450}=100\times\frac{450}{250}=180\)
a: \(=\left\{145-\left[130-10\right]:2\right\}\cdot5\)
\(=\left\{145-60\right\}\cdot5=85\cdot5=425\)
b: \(=100:\left\{250:\left[450-4\cdot125+4\cdot25\right]\right\}\)
\(=\dfrac{100}{250:\left[450-500+100\right]}=\dfrac{100}{250:50}=\dfrac{100}{5}=20\)
c: \(=355-5\cdot\left[64-\left(27-25\right)\right]=355-5\cdot\left[64-2\right]\)
\(=355-310=45\)