1 1/2 + 1 1/5 * y - 4/5 = 2 4/5
3/2 + 6/5 * y - 4/5 = 14/5
3/2 + 6/5 * y = 14/5 + 4/5
3/2 + 6/5 * y = 18/5
6/5 * y = 18/5 - 3/2
6/5 * y = 21/10
y = 21/10 : 6/5
y = 7/4
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1 1/2 + 1 1/5 * y - 4/5 = 2 4/5
3/2 + 6/5 * y - 4/5 = 14/5
3/2 + 6/5 * y = 14/5 + 4/5
3/2 + 6/5 * y = 18/5
6/5 * y = 18/5 - 3/2
6/5 * y = 21/10
y = 21/10 : 6/5
y = 7/4
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1 1/2 + 1 1/5 * y - 4/5 = 2 4/5
3/2 + 6/5 * y - 4/5 = 14/5
3/2 + 6/5 * y = 14/5 + 4/5
3/2 + 6/5 * y = 18/5
6/5 * y = 18/5 - 3/2
6/5 * y = 21/10
y = 21/10 : 6/5
y = 7/4
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Bình luận (0)