2x/3=(4x-8)/9-5
方程两边同时乘以9
6x=4x-8-5×9
6x=4x-8-45
(2x+3)/49=(4x-1)/7-5/21
[(2x+3)/49]×49×3=[(4x-1)/7×49×3]-[(5/21)×49×3]
6x+9=84x-21-35
56%x-19%=33%x+0.35
方程两边乘以100
56x-19=33x+35这个是对的
2x/3=(4x-8)/9-5
方程两边同时乘以9
6x=4x-8-5×9
6x=4x-8-45
(2x+3)/49=(4x-1)/7-5/21
[(2x+3)/49]×49×3=[(4x-1)/7×49×3]-[(5/21)×49×3]
6x+9=84x-21-35
56%x-19%=33%x+0.35
方程两边乘以100
56x-19=33x+35这个是对的