Jawaban:
a+b = 7 (5+2)
2b-a = -1 (4-5)
3a+b = 3.5+4 = 15+4 = 19
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Jawaban:
a+b = 7 (5+2)
2b-a = -1 (4-5)
3a+b = 3.5+4 = 15+4 = 19