7
90. *Efectuează:
* {[(2 x 8 x 5 - 2 x 15) - 25 ] : 5+ [(5 x 20:10 - 4x5: 2)] : 5} x 3 =
* 9 + 9 + 9 x [9 + 9 x (9-9:3)]} =
* 4 + 3x 8 + {[(3 x 8 - 6) + 2 x 3] : 4 + 6) =
* 1 + {2 x [3 + (14 +16): 5] - 54:9} x 63:7 =
* 7 + [25 x 4:10 + 5 x (36 - 2 x 15)] : 8 =
* 36 + {24 : 3 + 5 x [40 + 6 x (32:8 - 24 x 0 : 1)]} =
* 20 x {[(4 x 32 + 3 x 4): 10] ÷2+48÷8
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