Respuestas

2011-12-06T00:26:36+01:00

a) 4 - [3 - (8 + 5 -7) + 6] - 9 =

= 4 - (3 - 8 - 5 + 7 +6 ) - 9 = 

= 4 - 3 + 8 + 5 - 7 - 6 - 9 = -8

 

b) (1 - 5 x 3) : 2 - 8 : (-2) x (-5) + 6 =

= (1 - 15) : 2 + 4 x (-5) + 6 =

= 14 : 2 - 20 + 6 =

= 7 - 14 = -7

 

2011-12-06T00:58:55+01:00

4-[3-(8+3-7)+6]-9=

4-[3-(4)+6]-9=

4-[3-4+6]-9=

4-[5]-9=

4-5-9=-10

 

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(1-5*3)/2-8(-2)(-5)+6=

-14/2+2-8(10)+6=

-7+2-80+6=-79