2 years ago

A

Mathematics

1 answer:

SSSSS [86.1K]2 years ago

8 0

Answer: (7 + d) 4 and 4 (7 + d)

Step-by-step explanation:

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(7 + d) 4 = 28 + 4d (flipped version of 4d + 28)

4 (7 + d) = 28 + 4d (the same)

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Step-by-step explanation:

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Step-by-step explanation:

Sum of angles of a triangle=180°

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