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elena-14-01-66 [18.8K]
3 years ago
15

Question is depicted below:

Mathematics
2 answers:
Levart [38]3 years ago
7 0

Answer:

<u><em>(-2, 6)</em></u>

Step-by-step explanation:

<em>10x + 10y = 40 -(1)</em>

<em>5x + 3y = 8 -(2)</em>

<em></em>

<em>(1) =>        10x + 10y = 40</em>

<em>(2) x 2 => 10x +  6y = 16</em>

<em>=> 4y = 24</em>

<em>=> y = 6</em>

<em></em>

<em>5x + 3(6) = 8</em>

<em>5x = -10</em>

<em>x = -2</em>

<em></em>

<em>Solution = (-2, 6)</em>

d1i1m1o1n [39]3 years ago
7 0

Solution:

<u>Solve the system of equations to find the value of y.</u>

  • 10x + 10y = 40

        5x + 3y = 8

  • 10x + 10y = 40

        2(5x + 3y = 8)

  • 10x + 10y = 40

        10x + 6y = 16

  • 4y = 24
  • y = 6

<u>Substitute the value of y into any equation to find the value of x.</u>

  • 10x + 10y = 40
  • => 10x + 10(6) = 40
  • => 10x + 60 = 40
  • => 10x = -20
  • => x = -2

<u>Putting them in (x,y) form.</u>

  • (x,y) ⇒ (x = -2,y = 6) ⇒ (-2,6)

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