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Yuki888 [10]
3 years ago
11

10 dictionare si 2 truse de stiinte costa 550 lei 10 dictionare si 5 truse de stiinte costa 1150 lei cat costa un dictionar ? ca

t costa o trusa de atiinte
Mathematics
1 answer:
astra-53 [7]3 years ago
3 0
Ok I can’t tell what your saying because it’s not fluent
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Simultaneous equations 2x+3y=13 4x-y=-2
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Answer:

(0.5, 4 )

Step-by-step explanation:

Given the 2 equations

2x + 3y = 13 → (1)

4x - y = - 2 → (2)

Multiplying (2) by 3 and adding to (1) will eliminate the term in y

12x - 3y = - 6 → (3)

Add (1) and (3) term by term to eliminate y

14x = 7 ( divide both sides by 14 )

x = 0.5

Substitute x = 0.5 into either of the 2 equations and evaluate for y

Substituting into (1)

2(0.5) + 3y = 13

1 + 3y = 13 ( subtract 1 from both sides )

3y = 12 ( divide both sides by 3 )

y = 4

Solution is (0.5, 4 )

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Answer:

Step-by-step explanation:

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3 years ago
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son4ous [18]

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Step-by-step explanation:

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I think and I hope this helps
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