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20 + 12 - 8 = 24
20 - 8 = 12
8 plus 4 minus 12 divided by 1 is 0.
8 plus 1 times 12 minus 13 is equal to seven.
12-(-8) = 20
-4 + 12 = 8
Negative 8 minus 12 is negative 20.
12 - 8 + 3 + 5 = 12
12
20
-12 - 8 = -20
8 + 12 = 20
-20