Respostas

2013-07-12T11:49:15-03:00
A) 32-a=5 => -a=-32+5 =>-a=-27 =>-1X(-a=-27)=> a=27
b) 28-x=10 => -x=-28+10 =>-x=-18 =>-1X(-x=-18)=> x=18
c)1250-n=900 => -n=-1250+900 =>-n=-350 =>-1X(-n=-350)=> n=350
d)-300
e)x-278=132 =>x=132+278 x=410
f) faltou vc informar a diferença da F