Write an algebraic model for the statement then solve the model the sum of a number and -9 is -21

Martin Ptacek asked Nov 22, 2023

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7 votes

Martin Ptacek asked Nov 22, 2023

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23 votes

Answer:

x + ( - 9) = - 21

x - 9 = - 21

x = - 12

RAAAAM answered Nov 28, 2023

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