45点8比某数的5点1倍少2点65,求这个数.(用方程解决)

45.8-5.1x=2.65
5.1x=45.8+2.65
5.1x=48.45
x=48.45*5.1
x=9.5

设这个数为X,方程如下：5.1*X=45.8+2.65,
得X=9.5

45.8+2.65=5.1x
48.45=5.1x
x=48.45/5.1
x=9.5
o(︶︿︶)o