Simplify these
a: ( 16 + 12 ) - ( 2 × 6 )
b: 84 ÷ ( 72 ÷ 6 )
c: ( 83 - 38 ) × 15
d: ( 20 × 8 ) / ( 10 of 4 )
e: 24 + 15 / 3 × ( 4 - 2 )
f: ( 15 × 3 ) / 5 × 8 - 2 + 6 × (8 - 2 )
g: 5 × { 19 - ( 15 - 6 )}
h: 20 + { 5 × (72 - 42 ) }
i: 40 - { ( 17 - 3 ) / ( 20 - 13 ) }
j: ( 30 / 10 ) + { ( 6 × 12 ) / 8}
k: { 7 + ( 5 × 3 ) } - 12 + 6 of 3
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