解比例.X:14=6:28 0.75 x = 0.25 3 3 8 : 1 3 =x:
解比例.X:14=6:280.75x=0.25338:13=x:160.5:0.25=x:6x0.08=20.413:x=4:12....
解比例.X:14=6:28 0.75 x = 0.25 3 3 8 : 1 3 =x: 1 6 0.5:0.25=x:6 x 0.08 = 2 0.4 1 3 :x=4:12 .
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(1)X:14=6:28, 28X=14×6, 28X=84, x=3; (2)
0.25x=0.75×3, 0.25x=2.25, x=9; (3)
x=
(4)0.5:0.25=x:6, 0.25x=0.5×6, 0.25x=3, x=12; (5)
0.4x=2×0.08, 0.4x=0.16, x=0.4; (6)
4x=
4x=4, x=1. |
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