(0.4x+2.1)/0.5=(0.5-0.2x)/0.03+0.6
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(0.4x+2.1)/0.5=(0.5-0.2x)/0.03+0.6
急啊,帮忙啊!!1
谢谢!
谢谢!
谢谢!
谢谢!
(0.4x+2.1)/0.5=(0.5-0.2x)/0.03+0.6
化简:(2/5x+21/10)/(1/2)=(1/2-1/5x)/(3/100)+3/5
(2/5x+21/10)*2=(1/2-1/5x)*100/3+3/5
(2/5x+21/10)*30=(1/2-1/5x)*100*5+18
去括号:12x+63=250-100x+18
移项:12x+100x=250+18-63
合并同类项:112x=205
系数化一:x=205/112