0.52X4-4x=0.6
2.08-4x=0.6
4x=2.08-0.6=1.48
x=1.48÷4
x=0.37
8x-13=83
8x=13+83
8x=96
x=96÷8
x=12
1.8x+3.6=8.1
1.8x=8.1-3.6
1.8x=4.5
x=4.5÷1.8
x=2.5
0.52X4-4x=0.6
2.08-4x=0.6
4x=2.08-0.6=1.48
x=1.48÷4
x=0.37
8x-13=83
8x=13+83
8x=96
x=96÷8
x=12
1.8x+3.6=8.1
1.8x=8.1-3.6
1.8x=4.5
x=4.5÷1.8
x=2.5