解比例. (1) 16 3 : 2 5 = 16 7 :x (2)X:8=0.125:0.25
解比例.(1)163:25=167:x(2)X:8=0.125:0.25(3)1.8x=25(4)4.80.6=x12....
解比例. (1) 16 3 : 2 5 = 16 7 :x (2)X:8=0.125:0.25 (3) 1.8 x = 2 5 (4) 4.8 0.6 = x 12 .
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(1)
x=
(2)X:8=0.125:0.25, 0.25x=8×0.125, 0.25x÷0.25=1÷0.25, x=4; (3)
2x=1.8×5, 2x÷2=9÷2, x=4.5; (4)
0.6x=4.8×12, 0.6x÷0.6=57.6÷0.6, x=96. |
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