a) x - 103 = -203
x = 103 - 203
x = -100
b)x+ -36 = 0
x = 0 + 36
x=36
c)x - 105=150
x = 150 + 105
x = 255
d) x - (+21) = -29
x - 21 = -29
x = -29 + 21
x = -8
e) 5 + x = -7
x = -7-5
x=-12
f)-32-(x-5)=0
-32 - x + 5 = 0
x = -27
g) -12 + (x-9) = 0
x - 9 -12 = 0
x = 9+12
x=21
h)11 + (15-x) = 1
11 + 15 - x = 1
26 - x = 1
x = 26 - 1
x=25