Question 26: The calculation 112.b + 112.4b + 112.5b has the result:

Use the commutative property of multiplication and the distributive property of multiplication over addition.

We have: 112.b + 112.4b + 112.5b= 112.b + 112.b.4 + 112.b.5

= 112.b.(1 + 4 + 5) = 112.b.10 = 112.10.b = 1120b

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