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a) 7 10 9 13 12
b) 2 0 4 5 -6
c) 1 2 3 4 5
d) 2 3 -1 -5
2.16
a) 4*4 - (2*5) + 3*3 = 16 - 10 + 9 = 15
b) 5*1 - (3*4) + 2*11 = 5 - 12 + 22 = 15
c) 3 * [5*6 + 3*(-5) + 2*3 = 3 * (30 -15 + 6) = 3 * 21 = 63
d) (1,2*20 - 3*10) - (11*4 + 5*13) = (24 - 30) - (44 + 65) = (-6) - (109) = (-115)
e)
f)