Question

Please help with this

Answer 1

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Answer:

• 3(11 -7) +4(-8)
• -20

Explanation:

This is to help you learn to take advantage of the distributive property and the fact that multiplication can simplify repeated addition.

The numbers to be added include ...

• 3 values that are -7
• 4 values that are -8
• 3 values that are 11

This means we can add 11 and -7, and multiply the result by 3. It also means we can multiply -8 by 4. The sum of these products will be the same as the sum of the original 10-number set.

3(11 -7) +4(-8) = 3(4) -32 = 12 -32 = -20