( 1/9 X + 25) :X = 1:4怎么解

问题描述:

( 1/9 X + 25) :X = 1:4怎么解

( 1/9 X + 25) :X = 1:4
X=4(1/9X+25)
X=4/9X+100
5/9X=100
X=100÷5/9
X=180