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1. OBLICZ:
a) 30-12 b) 30-(-12) c) 23 - 18 d) - 12 - (-30)
18-23 -23+(-18) -30-12 12-(-30)
-18-23 -12-30 12-30 -30-(-12)
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a). 18
-5
-41
b. 42
-41
-42
c.5
-42
-18
d.18
42
-18
1
a)30-12=18
18-23=-5
-18-23=-41
b)42
-41
-42
c) 5
-42
-18
d)18
42
-18