Ответ:
8ab+3b-6ab+3b+4a = 2ab+6b+4a = 2×6×3 + 6×3 + 4×6 = 36+18+24 = 78
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Ответ:
8ab+3b-6ab+3b+4a = 2ab+6b+4a = 2×6×3 + 6×3 + 4×6 = 36+18+24 = 78