ME AJUDE !!!!!!!!! conta por favor. a)-3x+12x-8+12=
b)-5(2y+3)-2y+4(-1+y)=
c)9z-2(3-y)-(-3z+7)=
d)10xy+7x-3y+4x-7yx=
e)-7a+4b-5+3ab-8ba=
f)-w+8y+4w-2(w+y)=
g)-(4x+5)+2x+7(x-2)+3=
h)6m+3x-8m+5x+2m+9=
b)-5(2y+3)-2y+4(-1+y)=
c)9z-2(3-y)-(-3z+7)=
d)10xy+7x-3y+4x-7yx=
e)-7a+4b-5+3ab-8ba=
f)-w+8y+4w-2(w+y)=
g)-(4x+5)+2x+7(x-2)+3=
h)6m+3x-8m+5x+2m+9=
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