September 2018 2 28 Report
1.sederhanakanlah
a.5x+7x=
b.8x-9x=
c.-8 x-9x=
d.-7x-13=
e.6x-13x=
f.-7-5x=
g.5x+(2x)=
h.7x+(9x)=
i.8x-(-9x)=
j.9x-(7x)=
k.5x+7y-9x=
l.2x+8y-13x=
m.8x+7y-4x-9y=
n.3x-8y+9x+2y=
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