Calcule: 1 resolve a (x) e por último(+e-) a)15-6.8=
b)12.5-100=
c)(-8)5+16=
d)-30+6.(-1)=
e)35+(-9).(-2)=
f)18-(-6).(-1)=
g)-4.(-7)+50=
h)-3.(-8)+(-2).(-6)
alguem pode responder as minhas perguntas :)
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