Respostas

2013-11-27T16:14:57-02:00
A)  2x6+4x(-3)-55x(-4)=220
b) 5x(-2)+ 4x(-3) -8x5= -62
c) 3x(-2) -4x (-4) -5x (7)= -25
d) 9x(-3) -8x(-2) +7x (-5)= -46
2013-11-27T16:16:39-02:00
A-) 13 -12 + 220 = 221
B-) -10 - 12 - 40 = -66
C-) -6 +16 - 35 = -25
D-) -27 +16 - 35 = - 46