有几道一元一次方程题请教11x+64-2x=100-9x15-(8-5x)=7x+(4-3x)3(x-7)-2【9-4(2-x)】=224(x+2)=5(x-2)120-4(x+5)=25
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![有几道一元一次方程题请教11x+64-2x=100-9x15-(8-5x)=7x+(4-3x)3(x-7)-2【9-4(2-x)】=224(x+2)=5(x-2)120-4(x+5)=25](/uploads/image/z/8454716-44-6.jpg?t=%E6%9C%89%E5%87%A0%E9%81%93%E4%B8%80%E5%85%83%E4%B8%80%E6%AC%A1%E6%96%B9%E7%A8%8B%E9%A2%98%E8%AF%B7%E6%95%9911x%2B64-2x%3D100-9x15-%EF%BC%888-5x%EF%BC%89%3D7x%2B%EF%BC%884-3x%EF%BC%893%EF%BC%88x-7%EF%BC%89-2%E3%80%909-4%EF%BC%882-x%EF%BC%89%E3%80%91%3D224%EF%BC%88x%2B2%EF%BC%89%3D5%EF%BC%88x-2%EF%BC%89120-4%EF%BC%88x%2B5%EF%BC%89%3D25)
有几道一元一次方程题请教11x+64-2x=100-9x15-(8-5x)=7x+(4-3x)3(x-7)-2【9-4(2-x)】=224(x+2)=5(x-2)120-4(x+5)=25
有几道一元一次方程题请教
11x+64-2x=100-9x
15-(8-5x)=7x+(4-3x)
3(x-7)-2【9-4(2-x)】=22
4(x+2)=5(x-2)
120-4(x+5)=25
有几道一元一次方程题请教11x+64-2x=100-9x15-(8-5x)=7x+(4-3x)3(x-7)-2【9-4(2-x)】=224(x+2)=5(x-2)120-4(x+5)=25
11x-2x+9x=100-64
18x=36 4x+8=5x-10
x=2 4x-5x=-10-8
15-8+5x=7x+4-3x -x=-18
5x-7x+3x=4-15+8 x=18
x=-3
3x-21-18+8(2-x)=22 120-4x-20=25
3x-8x=22+21+18-16 -4x=25-120+20
-5x=45 -4x=-75
x=-9 x=18.75
2,-3,-9,18,18.75
11x+64-2x=100-9x
11x-2x+9x=100-64
18x=36
15-(8-5x)=7x+(4-3x)
15-8+5x=7x+4-3x
5x-7x+3x=4-15+8 ...
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11x+64-2x=100-9x
11x-2x+9x=100-64
18x=36
15-(8-5x)=7x+(4-3x)
15-8+5x=7x+4-3x
5x-7x+3x=4-15+8
x=-3
3(x-7)-2【9-4(2-x)】=22
(3x-21)-2*【9-8-4x】 =22
-2*【1-4x】=22-3x+21
(-2)-(-8x)=43-3x
3x-(-8x)=43-(-2)
11x=45
x=45/11
4(x+2)=5(x-2)
4x+8=5x-10
8+10=x
x=18
120-4(x+5)=25
120-25=4x+20
75=4x
x=23.75
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