解方程:①x+7/9x=4/3 ②6×4-1/2x=12 ③1/3x-1/6=2
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解方程:①x+7/9x=4/3 ②6×4-1/2x=12 ③1/3x-1/6=2
![解方程:①x+7/9x=4/3 ②6×4-1/2x=12 ③1/3x-1/6=2](/uploads/image/z/18711102-30-2.jpg?t=%E8%A7%A3%E6%96%B9%E7%A8%8B%EF%BC%9A%E2%91%A0x%2B7%2F9x%3D4%2F3+%E2%91%A16%C3%974-1%2F2x%3D12+%E2%91%A21%2F3x-1%2F6%3D2)
①x+7/9x=4/3
16/9x=4/3
4/3x=1
x=3/4
②6×4-1/2x=12
24-12=1/2x
1/2x=12
x=24
③1/3x-1/6=2
2x-1=12
2x=13
x=13/2
16/9x=4/3
4/3x=1
x=3/4
②6×4-1/2x=12
24-12=1/2x
1/2x=12
x=24
③1/3x-1/6=2
2x-1=12
2x=13
x=13/2
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