100
2 * x = 20
What is 10
100
p + - 10 = 22
What is 32
200
x - 10 = 13
What is 23
200
x + - 6 = 14
What is 20
300
p + 10 = 31
What is 21
300
M - 30 = 75
What is 105
400
20 + Q = 55
What is 35
400
x - 50 = 103
What is 153
400
v / -2 = 15
What is -30
500
500 + N = 958
What is 458
500
20 - x = 15
What is 5
500
23Q = 1,035
What is 45
500
-y + - 5 = 10
What is - 15