1/2X=126-1/4X
1/铅迟前槐清2X+1/4X=126
2/4X+1/4X=126
3/4X=126
X=126*4/旦姿3
X=168
2分之稿盯1x=126-4分之1x
2分键漏和之1x + 4分之1x =126
x=126÷4分搜伍之3
x=168
是求拿备X吧。原猛敏派式=(1/2)X+(1/4)X=126
=(3/4)X=126
X=126/(枝贺3/4)
=168
打错了~是燃粗1/2x=126-1/4x
1/空段备斗毁2x+1/4x=126
3/4x=126
x=168
两边同时加四分之一X,再同时乘以四分之三,得……X=168
两边各加1/4x,得3/4x=126,解得x=168