7x-3.4x=0.723.6x=0.72x=0.72/3.6x=0.2检验:左边=7*0.2-3.4*0.2=1.4-0.68=0.72=右边所以x=0.2是信橡穗方程的解谢谢,请如纯采滑卜纳
不懂升仿燃镇可追问吵段纤
7x—3.4x=0.723.6x=0.72x=0.72÷3.6x=0.2