1) 15x-2,35=4,1
15x=4.1+2.35==6.45
x=6.45/15
x=0.43
2) 72x-124.8=9.12
72x=9.12+124.8=133.92
x=133.92/72
x=1.86
3) 2x+0.18=7.98/19
2x+0.18=0.42
2x=0.42-0.18=0.24
x=0.24/2
x=0.12
1) 15x-2,35=4,1
15x=4.1+2.35==6.45
x=6.45/15
x=0.43
2) 72x-124.8=9.12
72x=9.12+124.8=133.92
x=133.92/72
x=1.86
3) 2x+0.18=7.98/19
2x+0.18=0.42
2x=0.42-0.18=0.24
x=0.24/2
x=0.12