Jawaban:
3a-6b+7)+(13a-2b+4)=-3a+13a-6b-2b+7+.
4
=10a-8b+11
=11+2(5a+4b)
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Jawaban:
3a-6b+7)+(13a-2b+4)=-3a+13a-6b-2b+7+.
4
=10a-8b+11
=11+2(5a+4b)