14.4:x=18:50.50.4=x0.69.6x=90.6350.7=x210.8:x=35:0.7549:(5+x)=14:256:34=x0.4x:1.6=12:45.-数学
题文
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答案
(1)14.4:x=18:5, 18x=14.4×5, 18x=72, x=4; (2)
0.4x=0.5×0.6, 0.4x=0.3, x=0.75; (3)
9x=9.6×0.6, 9x=5.76, x=0.64; (4)
0.7x=35×21, 0.7x=735, x=1050; (5)0.8:x=
0.6x=0.8×0.75, 0.6x=0.6, x=1; (6)49:(5+x)=14:2, |