Question

（X+15)/60+(X-15)/45=(X+35)/50+(X-35)/60 这个方程怎么解?

Answer 1

（X+15)/60+(X-15)/45=(X+35)/50+(X-35)/60 15（X+15)+20(X-15)=18(X+35)+15(X-35) 15X+225+20X-300=18X+630+15X-525 15X+20X-18X-15X=630-525+300-225 2X=180 X=90