9/(2*2+x*3+x-1) *3 =36/100怎么解

9/(2*2+x*3+x-1) *3 =36/100怎么解
9/(2*2+x*3+x-1) *3 =36/100怎么解

9/(2*2+x*3+x-1) *3 =36/100怎么解
9/(2*2+x*3+x-1) *3 =36/100
9/(4+3x+x-1) =12/100
9/(3+4x) =3/25
方程两边同时乘以(3+4x),得
9=9/25+12x/25
225=9+12x
12x=216
x=18
检验：左边=3/25
右边=3/25
所以x=18是原方程的根