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3 years ago

Solve for x in the simultaneous equation 2x+y=3 ,5x-2y=12

Mathematics

1 answer:

sp2606 [1]3 years ago

6 0

Answer:

x = 2

Step-by-step explanation:

Given the 2 equations

2x + y = 3 → (1)

5x - 2y = 12 → (2)

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

4x + 2y = 6 → (3)

Add (2) and (3) term by term

(5x + 4x ) +( - 2y + 2y) = 12 + 6 , that is

9x = 18 ( divide both sides by 9 )

x = 2

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Salsk061 [2.6K]

Question Completion

PIE CHART NUMBERS:

Excellent 9%
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Other 1%

Answer:

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Step-by-step explanation:

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$=\dfrac{^{126}C_4 \times ^{1400-126}C_0}{^{1400}C_4} \\=\dfrac{^{126}C_4 \times ^{1274}C_0}{^{1400}C_4}\\=0.000063 $(correct to 6 decimal places)$

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Answer:

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Step-by-step explanation:

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NARA [144]

Answer:

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Step-by-step explanation:

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