3/4X+1/2×3/4=1X-35％=3903X+300％X=25.23/4X+1/2×3/4=1
问题描述：
3/4X+1/2×3/4=1
X-35％=390
3X+300％X=25.2
3/4X+1/2×3/4=1
答
1：3/4x=1-1/2×3/4=1-3/8=5/8
x=5/8×4/3=5/6
2：x=390+35％＝390+7/20=390又7/20
3：3x+3x=25.2
6x=25.2
x=4.2
4：同1：
答
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答
1、 3/4X+1/2×3/4=1 2、x-35%=3903/4x+3/8=1 x=390+0.353/4x=5/8 x=390.35x=5/63、3X+300％X=25.2 4、3/4X+1/2×3/4=1（3+3）x=25.2 3/4x+3/8=16x=25.2 3/4x=5/8 x=4.2 x=5/6