Mathematics, 26.02.2022 01:40, yesharabaskoro

For each expression, write an equivalent expression that uses only addition. 20−9+8−7 = 11 + 1

4x−7y−5z+6 =

-3x−8y−4−87z

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For each expression, write an equivalent expression that uses only addition. 20−9+8−7 = 11 + 1