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5/7x+1/7=5/14+3/7

①21/5÷7x5/9 =21/5×1/7×5/9 =1/3 ②5/14÷[6/7X(2/3+

1/4x=3/5 x=3/5×4 x=12/5 6x=18/5 x=18/5÷6

求解方程 一.7x+7=14 7x=7 x=1 二.6x+6=12 6x=6 x=1

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