jediDR
12.10.2020 •
Mathematics
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Writing an equation of the form Ax +B=C to solve a word...
Karen sold t-shirts at a festival. She made $6 for each t-shirt she sold. Her expenses were $30. If she made a profit of $84, how
(a) Write an equation that could be used to answer the question above.
First, choose the appropriate form. Then, fill in the blanks with the
numbers 6, 30, and 84. Let x represent the number of t-shirts.
Solved
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Ответ:
see below
Step-by-step explanation:
Given
7x + 3x − 18 = 6(x + 3)
Distribute using the Distributive Property
7x + 3x − 18 = 6x +18
Combine like terms
10x -18 = 6x+18
Subtract 6x from each side Subtraction Property of Equality
10x -6x -18 = 6x +18-6x
Simplify
4x -18 = 18
Add 18 to each side Addition Property of Equality
4x -18+18 = 18+18
Simplify
4x = 36
Divide each side by 4 Division Property of Equality
4x/4 = 36/4
Simplfiy
x =9