16-X1 2 ,Ⅹ-(5/16-X%)÷1/2=15/16

2020-11-23 06:34:48 字数 3110 阅读 5416

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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