x+1/3x=38-10
4/3x=28
x=28*3/4
x=21
1/2x-1/4=1/2
1/2x=1/2+1/4
1/2x=3/4
x=3/4*2
x=3/2
17/20-70%x=3/20
0.7x=17/20-3/20
0.7x=7/10
x=7/10*10/7
x=1
x+1/3x=38-10
4/3x=28
x=28*3/4
x=21
1/2x-1/4=1/2
1/2x=1/2+1/4
1/2x=3/4
x=3/4*2
x=3/2
17/20-70%x=3/20
0.7x=17/20-3/20
0.7x=7/10
x=7/10*10/7
x=1