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2÷X二1解方程 解方程.75%X+24=57 &nb.

火烧 2023-01-31 10:26:39 1137
解方程.75%X+24=57 am . 解方程.75%X+24=57 am .(1)75%X+24=57, 0.75X+24-24=57-24, 0.75X÷0.75=33÷0.75, X=44;(2

解方程.75%X+24=57 &nb.  

解方程.75%X+24=57 &nb.

(1)75%X+24=57,
     0.75X+24-24=57-24,
     0.75X÷0.75=33÷0.75,
               X=44;

(2)

4 5

X-

2 3

=

1 6

4 5

X-

2 3

+

2 3

=

2÷X二1解方程 解方程.75%X+24=57 &nb.
1 6

+

2 3

4 5

5 4

=

5 6

×

5 4


         X=1

1 24

解方程.75%X+24=57 4 5 X- 2 3 = 1 6

(1)75%X+24=57,
0.75X+24-24=57-24,
0.75X÷0.75=33÷0.75,
X=44;

(2)

4 5

X-

2 3

=

1 6

4 5

X-

2 3

+

2 3

=

1 6

+

2 3

4 5

5 4

=

5 6

×

5 4


X=1

1 24

(1-75%x)=1/5(x+24)解方程

(1-75%x)=1/5(x+24)
解:(1-0.75x)=0.2(x+24)
0.25x=0.2x+0.48
0.25x-0.2x=0.48
0.05x=0.48
x=0.48/0.05
x=9.6

解方程.75x+x=10 3x-37=47 &nb.

(1)75x+x=10
          76x=10
      76x÷76=10÷76
            x=

5 38

(2)3x-

3 7

4 7

3x-

3 7

+

3 7

=

4 7

+

3 7

3x=1
     3x÷3=1÷3
         x=

1 3

(3)5x÷15=4.5

1 3

x=4.5

1 3

1 3

=4.5÷

1 3

x=13.5;

(4)5x-12=18
  5x-12+12=18+12
        5x=30
     5x÷5=30÷5
         x=6.

X+24=59解方程

x+24=59
x=59-24
x=35

解方程.4x÷24=38 (x-3.5)×8=26.4 &nb.

(1)4x÷24=38          
     4x÷24×24=38×24          
             4x=912
          4x÷4=912÷4
              x=228;

(2)(x-3.5)×8=26.4
           8x-28=26.4
        8x-28+28=26.4+28
              8x=54.4
           8x÷8=54.4÷8
               x=6.8;

(3)12.4y-3.6y=52.8
           8.8y=52.8
      8.8y÷8.8=52.8÷8.8
              y=6.

解方程3.5X-X=3.25 &nb.

(1)3.5X-X=3.25,
     (3.5-1)X=3.25,
           2.5X=3.25,
      2.5X÷2.5=3.25÷2.5,
              X=1.3;

(2)8X-5×14=9.12,
        8X-60=9.12,
     8X-60+60=9.12+60,
           8X=69.12,
        8X÷8=69.12÷8,
            X=8.64;

(3)3.3×2.6-5X=2.3×2.6,
         8.58-5X=5.98,
      8.58-5X+5X=5.98+5X,
         5.98+5X=8.58,
    5.98+5X-5.98=8.58-5.98,
              5X=2.6,
           5X÷5=2.6÷5,
               X=0.52.

解方程:x?12=x+24?1

去分母得:2(x-1)=x+2-4,
去括号得:2x-2=x+2-4,
解得:x=0.

解方程.x+35%x=540 &nb.

(1)x+35%x=540
         1.35x=540
   1.35x÷1.35=540÷1.35
             x=400

(2)

1 3

+

1 4

x=

4 9 1 3

+

1 4

x-

1 3

=

4 9

-

1 3 1 4

x=

1 9 1 4

x×4=

1 9

×4
         x=

4 9

(3)5x-

5 6

=

5 12

5x-

5 6

+

5 6

=

5 12

+

5 6

5x=

5 4

5x÷5=

5 4

÷5   
        x=

1 4

(4)

2 3

x=

7 12 2 3

3 2

=

7 12

×

3 2

x=

解方程:x+24=x+13

x+2 4 =

x+1 3


3×(x+2)=4×(x+1),
    3x+6-4=4x+4-4,
      3x+2=4x,
   3x+2-3x=4x-3x,
         x=2.

  
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