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3x + 11 = 2x + 30
3x - 2x = 30 - 11
x = 19
jadi x+2 = 19+2 = 21
3x+6+5=2x+30
3x+11=2x+30
3x-2x=30-11
x=19
x+2=
=》1.19+2=
=》19+2=21
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