1楼:
ⅹ-(5/16-x%)÷1/2=15/16ⅹ-(5/16-x%)×2=15/16
ⅹ-10/16+2x%=15/16
x+2x%=25/16
100x+2x=2500/16
102x=2500/16
x=2500/(16×102)
x=625/408
5/12(x+1/2)=15/16
2楼:妙酒
5/12(x+1/2)=15/16
x+1/2=15/16÷5/12
x+1/2=9/4
x=9/4-1/2
x=7/4
5/16+(7/16-1/4)÷1/2
3楼:匿名用户
5/16+(7/16-1/4)÷1/2
=5/16+3/16×2
=5/16+6/16
=11/16
15/16+括号7/16-1/4括号除以1/2等于多少
4楼:匿名用户
15/16+括号7/16-1/4括号除以1/2=15/16+(7/16-1/4)/(1/2)=15/16+(7/16-1/4)x2
=15/16+(3/16)x2
=15/16+6/16
=21/16
5楼:邱氏乐安
先算括号,在算除法,然后再算加
括号里面等于11/16,
除以1/2等于11/8
加上15/16等于37/16
答案是2又5/16
6楼:仰望北斗
15/16+(7/16-1/4)÷1/2
=15/16+3/16x2
=15/16+6/16
=21/16
=1又5/16
2-15/16÷5/7÷3/4 9/20÷[1/2×(2/5+4/5)] x-5/8x=1
7楼:咨询霍老师
2-15/16÷
5/7÷3/4
=2- 21/ 16 ÷3/4
=2- 7/4
=1/4 =0.25
9/20÷[1/2×(2/5+4/5)]
=9/20/[1/2×6/5]
=9/20×5/3
=3/4
x-5/8x=1/3×45
x-5/8x=15
3/8x=15
x=15÷8/3
x= 40
1/2x-1/3x+3/5x+2/5=5
1/6x +3/5x+2/5=5
23/30x+2/5=5
23/30x=5-2/5
23/30x=23/5
x=23/5 ÷23/30
x=60.8:4=x:8
0.8 ÷4=x ÷8
0.2=x ÷8
x=0.2×8
x=1.6
8楼:兖矿兴隆矿
2-15/16÷5/7÷3/4
=2-15/16*7/5*4/3
=2-7/4
=1/4
9/20÷[1/2×(2/5+4/5)]
=9/20/[1/2*6/5]
=9/20*5/3
=3/4
x-5/8x=1/3×45
3x/5=15
x=25
1/2x-1/3x+3/5x+2/5=5
(1/2-1/3+3/5)x=4.6
23x/30=4.6
x=6.9
0.8:4=x:8
4x=6.4
x=1.6
9楼:紫云千雪
1、2-15/16÷5/7÷3/4
=2-15/16*7/5*4/3
=2-7/4
=8/4-7/4
=1/4
2、9/20÷[1/2×(2/5+4/5)]=9/20/[1/2*6/5]
=9/20/3/5
=9/20*5/3
=3/4
3、x-5/8x=1/3×45
3/8x=15
x=15*8/3
x=40
4、1/2x-1/3x+3/5x+2/5=5(1/2-1/3+3/5)x=5-2/5
23/30x=23/5
x=65、0.8:4=x:8
4x=6.4
x=1.6
(x-1/5)+1/4=15/16 解方程过程
10楼:匿名用户
x-4/20+5/20=15/16
x+1/20=15/16
x=15/16-1/20
x=75/80-4/80
x=71/80
11楼:寂寂落定
x-1/5=15/16-1/4
x-1/5=11/16
x=11/16+1/5
x=71/80
15/16-x=5/8(解方程)
12楼:苌如柏萧聪
解:方程两边同乘以16得
15-16x=10
方程两边同时减去15得
-16x=-5
方程两边同时除以-16得
x=5/16
5÷3/10+3/10÷5=? x÷1/2=5/7÷15/14=? 16-2x=15.6=? 要过
13楼:时空交错v刹在
x*(16-2x)/2=15
8x-x^2=15
x^2-8x+15=0
(x-3)(x-5)=0
x1=3 x2=5
14楼:匿名用户
5÷3/10+3/10除以5=5×10/3+3/10×1/5=50/3+3/50
15楼:王伟
5÷3/10+3/10÷5=0.22666666666667
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