5x+200=600-3x 5x-4=4x-3 79-3乘(x-1)=70.6 8乘 (2X-7)=5(x=13) 0.2乘(5x-1)=3+(19-5x)

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5x+200=600-3x 5x-4=4x-3 79-3乘(x-1)=70.6 8乘 (2X-7)=5(x=13) 0.2乘(5x-1)=3+(19-5x)

5x+200=600-3x 5x-4=4x-3 79-3乘(x-1)=70.6 8乘 (2X-7)=5(x=13) 0.2乘(5x-1)=3+(19-5x)
5x+200=600-3x 5x-4=4x-3 79-3乘(x-1)=70.6 8乘 (2X-7)=5(x=13) 0.2乘(5x-1)=3+(19-5x)

5x+200=600-3x 5x-4=4x-3 79-3乘(x-1)=70.6 8乘 (2X-7)=5(x=13) 0.2乘(5x-1)=3+(19-5x)
5x+200=600-3x
5x+3x=600-200
8x=400
x=50
5x-4=4x-3
5x-4x=4-3
x=1
79-3(x-1)=70.6
79-3x+3=70.6
3x=82-70.6
3x=11.4
x=3.8
8(2x-7)=5(x+13)
16x-56=5x+65
11x=121
x=11
0.2(5x-1)=3+19-5x
x-0.2=22-5x
6x=22.2
x=3.7

一,8x=400.x=50
二,x=1.三,79-3x+3=70.82-3x=70.x=4.

??

5x+200=600-3x
5x+3x=600-200
8x=400
x=50
5x-4=4x-3
5x-4x=4-3
x=1
79-3(x-1)=70.6
79-3x+3=70.6
3x=82...

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5x+200=600-3x
5x+3x=600-200
8x=400
x=50
5x-4=4x-3
5x-4x=4-3
x=1
79-3(x-1)=70.6
79-3x+3=70.6
3x=82-70.6
3x=11.4
x=3.8
8(2x-7)=5(x+13)
16x-56=5x+65
11x=121
x=11
0.2(5x-1)=3+19-5x
x-0.2=22-5x
6x=22.2x=3.70| 评论

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