1/5:3/4=2:X 4.8:3.6=X:1/5
3个回答
1/5:3/4=2:X
1/5X=2×3/4
1/5X=3/2
X=7.5
4.8:3.6=X:1/5
3.6X=4.8×1/5
3.6X=0.96
X=4/15
相关问题
6(x+1)=4(x+4) 6(x-1)=4(3-2x) 5-3x=8-4x 5-(x+3)=4-3x 1/2(x+6)
4X-1.8=4.8.2.5X-2.5=7.5.5X-1.8=4.3X+1.5=6.求X
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求未知数[1/4]X+[1/2]X=[5/8] [6/5x]=[2.4/3.8+1.2] 3.2X-4×3=
1/1x2x3x4+1/2x3x4x5+1/3x4x5x6+1/4x5x6x7+1/5x6x7x8+1/6x7x8x9+
(1)9x=[3/8](2)x÷[5/6]=[4/5](3)[2/3]x-[1/6]x=[1/2](4)[3/4]÷x×
1、2x+6x-1.6=0.4*10 2、16-3x=2x-6 3、4.2*3-3x=5.1 4、x-0.8x=6 5、
(1)5x- 1 4 ×8=10 (2)12x+1.5=5.1 (3)5.5x-1.3x=12.6 (4)5(x-2.8
解比例.(1)x:3.5=1.4:5.6(2)3.2:x=0.8:1.2(3)9.6:4=x:10(4)3.5:x=10