x+5.3等于60解方程验算怎么算?
问题描述:
x+5.3等于60解方程验算怎么算?
答
x+5.3=60
x=60-5.3
x=54.7
验算:
54.7+5.3=60
答
x+5.3=60
x=60-5.3
x=54.7
54.7+5.3=60
答
x+5.3=60
x=60-5.3
x=54.7
验算:
把x=54.7代入原方程
左边=54.7+5.3=60=右边