解方程,把过程写出来!(1)x+1/3x=4/5 (2) 5/2x=3/2*7 (3)1/6x-2/9=1/9 (4)(1+3/4)=1/3+1/4谢谢咯
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![解方程,把过程写出来!(1)x+1/3x=4/5 (2) 5/2x=3/2*7 (3)1/6x-2/9=1/9 (4)(1+3/4)=1/3+1/4谢谢咯](/uploads/image/z/11498899-67-9.jpg?t=%E8%A7%A3%E6%96%B9%E7%A8%8B%2C%E6%8A%8A%E8%BF%87%E7%A8%8B%E5%86%99%E5%87%BA%E6%9D%A5%21%EF%BC%881%EF%BC%89x%2B1%2F3x%3D4%2F5+++++++++++%EF%BC%882%EF%BC%89+++5%2F2x%3D3%2F2%2A7+++++++++%EF%BC%883%EF%BC%891%2F6x-2%2F9%3D1%2F9++++++++++%EF%BC%884%EF%BC%89%EF%BC%881%2B3%2F4%EF%BC%89%3D1%2F3%2B1%2F4%E8%B0%A2%E8%B0%A2%E5%92%AF)
解方程,把过程写出来!(1)x+1/3x=4/5 (2) 5/2x=3/2*7 (3)1/6x-2/9=1/9 (4)(1+3/4)=1/3+1/4谢谢咯
解方程,把过程写出来!
(1)x+1/3x=4/5 (2) 5/2x=3/2*7 (3)1/6x-2/9=1/9 (4)(1+3/4)=1/3+1/4
谢谢咯
解方程,把过程写出来!(1)x+1/3x=4/5 (2) 5/2x=3/2*7 (3)1/6x-2/9=1/9 (4)(1+3/4)=1/3+1/4谢谢咯
(1)
x+1/3x=4/5
x(1+1/3)=4/5
4/3x=4/5
x=4/5÷4/3
x=4/5×3/4
x=3/5
(2)
5/2x=3/2*7
5/2x=21/2
5x=21
x=21/5
(3)
1/6x-2/9=1/9
1/6x=1/9+2/9
1/6x=3/9
1/6x=1/3
x=1/2
(4)
(1+3/4)x=1/3+1/4
7/4x=4/12+3/12
7/4x=7/12
x=7/12×4/7
x=4/12
x=1/3
4/3x=4/5
x=4/5*3/4
x=3/5
5/2x=21/2
x=21/2*2/5
x=21/5
1/6x=1/9+2/9
1/6x=1/3
x=6*1/3
x=2
第四个应该是(1+3/4)x吧?你式子里面没有x,如果是这样那么
7/4x=4/12+3/12
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4/3x=4/5
x=4/5*3/4
x=3/5
5/2x=21/2
x=21/2*2/5
x=21/5
1/6x=1/9+2/9
1/6x=1/3
x=6*1/3
x=2
第四个应该是(1+3/4)x吧?你式子里面没有x,如果是这样那么
7/4x=4/12+3/12
7/4x=7/12
x=4/7*7/12
x=1/3
收起