Mathematics, 06.05.2021 01:00 zaiinab

For each expression, write an equivalent expression that only uses addition a. 20 - 9 + 8 -7 b. 4x - 7y - 5z + 6 c. -3x - 8y - 4 - 8/7z

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For each expression, write an equivalent expression that only uses addition a. 20 - 9 + 8 -7 b. 4x -...

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