solve for x
x + 22 =40
x=18
1/2y = 2
x = 4
3w=30
w=10
x/3=9
x = 27
25y=100
y = 4
w - 40 = 40
w=80
x - 4 = 22
x =26
100y= 100
y =1
w - 3= 300
w =303
4x=16
x= 4
25 + y = 25
y=0
w + 25 = 50
w =25
6x=36
x =6
y + 700 = 800
y =100
500w=500
w = 1