a) \(2\cdot\left[\left(195+35:7\right):8+195\right]-400\)
\(=2\cdot\left[\left(195+5\right):8+195\right]-400\)
\(=2\cdot\left(200:8+195\right)-400\)
\(=2\cdot220-400\)
\(=440-400=40\)
b) \(4\cdot\left\{3^2\cdot\left[\left(5^2+2^3\right):11^1\right]-26\right\}+2000\)
\(=4\cdot\left[3^2\cdot\left(33:11\right)-26\right]+2000\)
\(=4\cdot\left(3^2\cdot3-26\right)+2000\)
\(=4\cdot1+2000=4+2000+2004\)
\(a,\text{ }2\cdot\left(\left\{195+35\text{ : }7\right\}\text{ : }8+195\right)-400\)
\(=2\cdot\left(\left\{195+5\right\}\text{ : }8+195\right)-400\)
\(=2\cdot\left(200\text{ : }8+195\right)-400\)
\(=2\cdot\left(25+195\right)-400\)
\(=2\cdot220-400\)
\(=440-400\)
\(=40\)