解方程:6X减15乘4等於3/5 6X减3/4减1/4等於9

解方程:6X减15乘4等於3/5 6X减3/4减1/4等於9

6X减15乘4等於3/5
6X-60=3/5
6X=60.6
X=10.1
6X减3/4减1/4等於9
6X-(3/4+1/4)=9
6X-1=9
6X=10
X=5/3