( 3/4 ÷ 3/100 −23 1/2 )÷1 1/2 · 2/3 +1 1/6

−7333 /4400

(Decimal: -1.666591)

Step-by-step explanation:

1 5/8

Step-by-step explanation:

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true statements:

a) x + y = y + x   ⇒ commutative property of addition

b) (x * y) * z = x * (y * z) ⇒ associative property of multiplication

d) (x + y) + z = x + (y + z) ⇒ associative property of addition

false statements:

c) x - y = y - x   should be: x - y = - y + x

e) (x - y) - z = x - (y - z) should be: (x - y) - z = x - (y + z)

step-by-step explanation:

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