细心点就好了!
1.5×3+3x=3604.5+3x=3603x=360-4.53x=355.5x=118.5
1.5*3=4.5就这里错了
1.5×3+3x=3604.5+3x=3603x=360-4.53x=355.5x=118.5验证:1.5×3+3×118.5=360