31. Verify a - (- b) = a + b for a = 16, b = 11
32. Find the value of x and y from the given figure: 18"
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Step-by-step explanation:
a-(-b) = a+b a=16 b=11
= 16-(-11) = 16+11
= 16+11 = 16+11
= 17 = 17
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