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3x + 6 + 5 = 2x + 30
3x - 2x = 30 - 6 - 5
x = 19
Maka nilai x + 2 = 19 + 2
= 21
3x+6+5=2x+30
3x+11=2x+30
3x-2x=30-11
x=19
x+2=19+2 =21