x-46=90
x=90+46
x=136
54+x=54
x=0
x+65=100
x=100-65
x=35
x+0.7=2.3
x=2.3+0.7
x=3
x+54=18
x=18-54
x=-36
x-0.5=7.2
x=7.2+0.5
x-7.7
x+25=120
x=120-25
x=95
x-0.4=2.6
x=2.6+0.4
x=3
x-46=90
x=90+46
x=136
54+x=54
x=0
x+65=100
x=100-65
x=35
x+0.7=2.3
x=2.3+0.7
x=3
x+54=18
x=18-54
x=-36
x-0.5=7.2
x=7.2+0.5
x-7.7
x+25=120
x=120-25
x=95
x-0.4=2.6
x=2.6+0.4
x=3