1.) 6/19 + 6 3/7 × 1/6
= 6/19 + (45/7 × 1/6)
= 6/19 + (45 × 1/7 × 6)
= 6/19 + 45 ÷ 3/42 ÷ 3
= 6/19 + 15/14
= (266 ÷ 19) × 6 + (266 ÷ 14) × 15/266
= (14 × 6) + (19 × 15)/266
= 84 + 285/266
= 369/266
= 1 103/266
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1.) 6/19 + 6 3/7 × 1/6
= 6/19 + (45/7 × 1/6)
= 6/19 + (45 × 1/7 × 6)
= 6/19 + 45 ÷ 3/42 ÷ 3
= 6/19 + 15/14
= (266 ÷ 19) × 6 + (266 ÷ 14) × 15/266
= (14 × 6) + (19 × 15)/266
= 84 + 285/266
= 369/266
= 1 103/266