不改变分式的值,把下列各式的分子与分母中各项的系数都化为整数.①13x?15y2x+16y=______; ②0.2x?12y13x+14=______;③0.8x?0.78y0.5x+0.4y=______; ④a2?0.4b0.6a+34b=______.
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2x+
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30(
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30(2x+
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10x?6y |
60x+5y |
0.2x?
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60×(0.2x?
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60×(
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12x?30y |
20x+15 |
0.8x?0.78y |
0.5x+0.4y |
50×(0.8x?0.78y) |
50×(0.5x+0.4y) |
40x?39y |
25x+20y |
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0.6a+
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20×(
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20×(0.6a+
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10a?8b |
12a+15b |
10x?6y |
60x+5y |
12x?30y |
20x+15 |
40x?39y |
25x+20y |
10a?8b |
12a+15b |