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andrew11 [14]
3 years ago
12

Explain two ways to solve 20=5(-3+x)

Mathematics
2 answers:
andre [41]3 years ago
8 0

Answer:

x=7

Step-by-step explanation:

20= 5(-3 +x)

20= 5(-3+7)

20=5(4)

20=20

20=-15+5x

+15=+15

35=5x

x=7

Ne4ueva [31]3 years ago
4 0

Answer:

I only know one way and its x = 7

Step-by-step explanation:

20 = 5( x -3 )

20/5 = x- 3

4 = x - 3

4 + 3 = x

7 = x

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Clodagh and Eva went school supply shopping together. Clodagh bought 3 packs of pencils and 5 notebooks for a total of $18. Eva
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Answer:

each notebook costs $2.70

each pack of pencils costs $1.50

Step-by-step explanation:

system of equations:

let p = pack of pencils

let n = notebook

3p + 5n = 18

4p + 4n = 16.8

I used the elimination method by multiplying the first equation by 4 and the second equation by -3

4(3p + 5n = 18)  =  12p + 20n = 72

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