Jawaban:
1. 7a+3a=10a
5b-5b= 0b
jawab=10a dan 0b
2. 10b-5b=5b
jawab:10k-k+k-5b
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Jawaban:
1. 7a+3a=10a
5b-5b= 0b
jawab=10a dan 0b
2. 10b-5b=5b
jawab:10k-k+k-5b