(0.2x-1/2y)/(1/4x+2/3y);0.1x+0.3y/0.5x-0.02y;不改变分式的值,将其分子和分母中各项的系数都化为

问题描述:

(0.2x-1/2y)/(1/4x+2/3y);0.1x+0.3y/0.5x-0.02y;不改变分式的值,将其分子和分母中各项的系数都化为

=(x/5-y/2)/(x/4+2y/3) 分子分母同时乘以60
=(12x-30y)/(15x+40y)
(0.1x+0.3y)/(0.5x-0.02y) 分子分母同时乘以50
=(5x+15y)/(25x-y)