Question

a) 14 − {7 + 4 · 3 - [(-2) ·( 2 - 6)]}+ (2 + 6 - 5 · 3) + 3 - (5 - 2 ÷ 2) =
b) 5 − [6 − 2 − (1 − 8) − 3 + 6] + 5 =
c) (6 + (-12) + 17) – 1 – 23 + (-12) + 2 + 1 =
d) 61 + (-23 + 8) + (18 + (-13)) + (14 + (-3)) – (-3 + (-8)) =

Answer 1

a) 14 − {7 + 4 · 3 - [(-2) ·( 2 - 6)]}+ (2 + 6 - 5 · 3) + 3 - (5 - 2 ÷ 2) = 14 − {7 + 12 - [(-2) ·( -4)]}+ (2 + 6 - 15) + 3 - (5 - 1) = 14 − {7 + 12 -8}+ (-7) + 3 - (+4) = 14 − 11 -7 + 3 - 4 = -5

b)  5 − [6 − 2 − (1 − 8) − 3 + 6] + 5 =  5 − [6 − 2 − (-7) − 3 + 6] + 5 = 5 − [6 − 2 +7 − 3 + 6] + 5 = 5 - 14 + 5= -4

c) (6 + (-12) + 17) – 1 – 23 + (-12) + 2 + 1 = (6 - 12 + 17) – 1 – 23 - 12 + 2 + 1 = 11 -33 = -22

d) 61 + (-23 + 8) + (18 + (-13)) + (14 + (-3)) – (-3 + (-8)) = 61 -15 + 5 + 11 – (-11)) = 61 -15 + 5 + 11 +11 = 73