Respostas

2013-12-25T01:33:39-02:00
 1.    \sqrt{625} + (2.7)- (3^{3}) ] . 1,75 = [25 + 14 - 27] . 1,75 = 12 . 1,75 = 14

 2.2.10.12x.17.18.200 = 20 . 204x . 3600 = 4080x . 3600 = 14688000

 3. x=10-(36/2) = x = 10 - 18 = x = -8

 4.  10x=(13-4)+(2.8)+(15.2)+(18.4) = 10x = 9 + 16 + 30 + 72 = 10x = 127 = x = 127/ 10 = x = 12,7

 5.   x+80+82=45.4 = x + 162 = 180 = x = 180 - 162 = x = 18

 6.   2.3x.7.11.13.17.19 = 6x.77.221.19 = 462x. 4199 =  1939938