12-6x=2又5分之2
x= (1-1/5)/(1/2)
x= 8/5
4分之1x=8分之5
x= 5/2
6x-1.8=5.4
x= (5.4+1.8)/6
x=1.2
8x+12x=240
x= 240/20
x= 12
12x=72
x= 72/12
x= 6
(x-18)X6=7.2
x=7.2/6+18
x= 19.2
x-0.52x=0.48
x= 0.48/0.48
x= 1
16.2-12x=3.6
x= (16.2-3.6)/12
x= 1.05
12-6x=2又5分之2
x= (1-1/5)/(1/2)
x= 8/5
4分之1x=8分之5
x= 5/2
6x-1.8=5.4
x= (5.4+1.8)/6
x=1.2
8x+12x=240
x= 240/20
x= 12
12x=72
x= 72/12
x= 6
(x-18)X6=7.2
x=7.2/6+18
x= 19.2
x-0.52x=0.48
x= 0.48/0.48
x= 1
16.2-12x=3.6
x= (16.2-3.6)/12
x= 1.05