Question

初二比例题,数学高手请进!在线等……（要有过程!拜托各位了）

Answer 1

a/b=c/d=e/f=3

a=3b;c=3d;e=3f

2a+c-e+3=2*3b+3d-3f+3=6b=3d-3f+3=

3(2b+d-f+1)

所以（2a+c-e+3）/（2b+d-f+l）=3