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

Write an algebraic model for the statement then solve the model the sum of a number and -9 is -21
asked 209k views
3 votes
Write an algebraic model for the statement then solve the model the sum of a number and -9 is -21

asked
User Aleksandar Vucetic
by
8.0k points

1 Answer

4 votes

Answer:


x + ( - 9) = - 21


x - 9 = - 21


x = - 12

answered
User Nuander
by
8.5k points
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