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2.5x÷20=16解方程 解方程x-0.75x=4

火烧 2022-02-11 17:59:22 1139
解方程x-0.75x=4 解方程x-0.75x=4x-0.75x=4 1-0.75 x=40.25x=41/4x=4x=16解方程:x-0.75x=42苍月Swart ,你好:x-0.75x=42解:

解方程x-0.75x=4  

解方程x-0.75x=4

x-0.75x=4
(1-0.75)x=4
0.25x=4
1/4x=4
x=16

解方程:x-0.75x=42

苍月Swart ,你好:
x-0.75x=42
解:0.25X=42
X=42÷0.25
X=168

解方程:x-0.75x=6.25

0.25x=6.25,x=25

2.5x÷20=16解方程 解方程x-0.75x=4

x-0.75x=1怎么解方程

0.25x=1
x=1/0.25
x=4

解方程:x^0.75-x^0.25=0.75 求x

x^3/4-x^1/4=3/4
(x^3/4-x^1/4)^2=9/16
x^3/2+x^1/2-2x=9/16
(x^3/2+x^1/2)^2=(9/16+2x)^2
x^3+x+2x^2=81/256+4x^2+2*9/16*2x
x^3-2x^2-5/4x-81/256=0
256x^3-512x^2-320x-81=0

解方程.x÷0.75=1.54

①x÷0.75=1.54,
x÷0.75×0.75=1.54×0.75,
x=1.155;

②1.8x=2.16,
1.8x÷1.8=2.16÷1.8,
x=1.2;

③x+6.53=21.1,
x+6.53-6.53=21.1-6.53.
x=14.57;

X:0.75=81.25 解方程

x=81.25*0.75
x=60.9375

解方程. 0.75x+13

(1)0.75x+

1 3

×

3 4

=1,
          0.75x+

1 4

-

1 4

=1-

1 4


          0.75x÷0.75=

3 4

÷0.75,
                    x=1;

(2)20-120% x=5,
20-120% x+120%=5+120%x,
          20-5=5+120%x-5,
   120%x÷120%=15÷120%,
             x=12.5;

(3)x+

1 3

x=36,

4 3

x=36,

4 3

3 4

=36×

3 4


        x=27;

(4)(1-

3 7

)x=60,

4 7

x=60,

4 7

7 4

=60×

7 4


            x=105.

解方程.0.75x+3×

(1)0.75x+3×0.8=7.5,
0.75x+2.4=7.5,
0.75x=7.5-2.4,
0.75x=5.1,
x=5.1÷0.75,
x=6.8;
(2)

2x 0.6 = 0.9 3


2x×3=0.6×0.9,
6x=0.54,
x=0.54÷6,
x=0.09.

x-0.75=2.5解方程

x-0.75=2.5
解:X-0.75+0.75=2.5+0.75
X=3.25

  
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