\(=426-\left\{3\cdot\left(152-9\right)+1\right\}:10\)
\(=426-\left\{3\cdot143+1\right\}:10\)
=426-43
=383
=426-{3x(152-9)+1}:10
=426-43
=383
\(426-\left\{3.[152-\left(5-2\right)^2]+1\right\}:10\)
\(=426-\left\{3.[152-9]+1\right\}\)
\(=426-430=\left(-4\right)\)
\(426-\left\{3.\left[152-\left(5-2\right)^2\right]+1\right\}:10\\ =426-\left\{3.\left[152-3^2\right]+1\right\}:10\\ =426-\left\{3.\left[152-9\right]+1\right\}:10\\ =426-\left\{3.143+1\right\}:10\\ =426-\left\{429+1\right\}:10\\ =426-430:10\\ =426-43=383\)
426-{3x(152-9)+1}:10
=426-{3x143+1}:10
=426-43
=383