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Varvara68 [4.7K]
3 years ago
8

Kate sold 12 of her paintings and purchased 7 more. if kate has 21 paintings now, how many paintings did she have to begin with?

Mathematics
1 answer:
kicyunya [14]3 years ago
7 0
First, let x or any variable represent the number of paintings Kate initially has. After selling 12 of it, her paintings now becomes only x - 12. Then, she purchased 7 more making the number of her paintings become x - 12 + 7 = x - 5. This number tantamount to 21. 

                                           x - 5 = 21      ; x = 26

Thus, Kate initially had 26 paintings. 
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Answer: x=7

               ab=21

               bc=14

Step-by-step explanation:

ab=3x

bc=2x±7

ac=42

3x±2x±7=42

5x±7=42

5x=42-7

5x=35

to get the value of x you divide 35 by 5x

35÷5x=7

so the value of x is 7

ab=3x

x=7

3x=7×3x

7×3=21

x=7

2x=7×2x

2×7=14

5 0
3 years ago
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PIT_PIT [208]
LY = 5.2  ,  TY = 3.9
Δ LTN is a right triangle , ∠T = 90° , TY⊥LN
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Δ NYT is a right triangle , ∠Y = 90°
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7 0
3 years ago
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Anna71 [15]
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8 0
3 years ago
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Murrr4er [49]

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Step-by-step explanation:

Hope this helps!

5 0
3 years ago
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