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A=5×(8×2-1-5)-63:9
A = 5 x (16 -1-5) - 7
A= 5 x 10 -7
a = 50-7 = 43
A=5×(8×2-1-5)-63:9
A = 5 x (16 -1-5) - 7
A= 5 x 10 -7
a = 50-7 = 43
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