lisetteilozo
lisetteilozo
19-09-2018
Mathematics
contestada
Please help I don’t understand.
Respuesta :
shindmand
shindmand
19-09-2018
a+b+c+d=0
a=a
b=a+2
c=a+2+2
d=a+2+2+2
a+a+2+a+4+a+6=0
4a+12=0
4a=-12
a=-3
b=-1
c= 1
d=3
Check:
-3-1+1+3
-4+4=0
0=0 correct
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