1) 40-\(\left[6-\left(5-1\right)\right]\)
40-2=38
2) 4.3+\(\left[8-\left(2+3\right)\right]\)
4.3+5=17
3) \(36:\left\{46-\left[4:\left(17-7\right)\right]\right\}\)
\(36:\left\{46-0,4\right\}\)
36:45,6=\(\dfrac{15}{19}\)
4) 2\(.\left\{19+\left[12:\left(8-4\right)\right]+5\right\}\)
2.\(\left\{19+3+5\right\}\)
2.27=54
5) 12:\(\left\{18:\left[9-\left(4+2\right)\right]\right\}\)
12:\(\left\{18:3\right\}\)
12.6=72
6) \(40:\left\{5.\left[10-\left(6+3\right)\right]\right\}\)
40:\(\left\{5.1\right\}\)
40:5=8
7) 25.{16:[12-4+4.(4.2)]}
\(25.\left\{16:\left[12-4+32\right]\right\}\)
25.\(\left\{16:40\right\}\)
25.0,4=10