3*1.8-0.6x=5 0.5(3+x)=6.2 x/0.5-10+2=0 3y-4=y+3 解方程,快··········

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3*1.8-0.6x=5 0.5(3+x)=6.2 x/0.5-10+2=0 3y-4=y+3 解方程,快··········
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3*1.8-0.6x=5 0.5(3+x)=6.2 x/0.5-10+2=0 3y-4=y+3 解方程,快··········
3*1.8-0.6x=5 0.5(3+x)=6.2 x/0.5-10+2=0 3y-4=y+3 解方程,
快··········

3*1.8-0.6x=5 0.5(3+x)=6.2 x/0.5-10+2=0 3y-4=y+3 解方程,快··········
3×1.8-0.6x=5
5.4-0.6x=5
0.4=0.6x
x=2/3
0.5(3+x)=6.2
1.5+0.5x=6.2
0.5x=4.7
x=9.4
(x/0.5)-10+2=0
x-5+1=0
x=4
3y-4=y+3
2y=7
y=3.5

(1) 3×1.8-0.6x=5
5.4-0.6x=5
0.4=0.6x
x=2/3
(2) 0.5(3+x)=6.2
1.5+0.5x=6.2
0.5x=4.7
x=9.4
(3) (x/0.5)-10+2=0(请标明括号以免理解出错)
x-5...

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(1) 3×1.8-0.6x=5
5.4-0.6x=5
0.4=0.6x
x=2/3
(2) 0.5(3+x)=6.2
1.5+0.5x=6.2
0.5x=4.7
x=9.4
(3) (x/0.5)-10+2=0(请标明括号以免理解出错)
x-5+1=0
x=4
(4) 3y-4=y+3
2y=7
y=3.5
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(1) 3×1.8-0.6x=5
5.4-0.6x=5
5.4-5=0.6x
0.6x=0.4
x=2/3
(2) 0.5(3+x)=6.2
1.5+0.5x=6.2
0.5x=6.2-1.5
0.5x=4.7
x=9.4
(3) (x/0.5)-10+2=0
2x-10+2=0
2x-8=0
2x=8
x=4
(4) 3y-4=y+3
3y-y=3+4
2y=7
y=3.5

  • 3*1.8-0.6x=5 

  0.6x=5.4-5

  x=0.4\0.6

  x=2\3

  • 0.5(3+x)=6.2

  1.5+0.5x=6.2

  0.5x=4.7

  x=9.4

  • x/0.5-10+2=0

  x\0.5=8

  x=4

  • 3y-4=y+3

  2y=7

  y=7\2

456

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