Phillip bought 12 used cds and dvds. cds cost 2 each and dvds cost 3 each. he spent 32 not including tax. how many dvds did phillip buy?

Eight

Step-by-step explanation:

We have two conditions:

(1)           C + D  = 12

(2)      2C + 3D = 32          Subtract D from each side of Equation (1)

                    C = 12 - D     Multiply both sides by 5

2(12 – D) + 3D = 32          Remove parentheses

24 – 2D + 3D = 32          Combine like terms

           24 + D = 32           Subtract D from each side

                   D = 8

Philip bought eight DVDs.

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need more detail

step-by-step explanation:

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