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azamat
2 years ago
6

Diego tried to solve the equation 13(x+15)=3

Mathematics
1 answer:
enyata [817]2 years ago
6 0

Answer:

x=0.107

Step-by-step explanation:

First we distribute 13 to x and 15. That gives us 13x+15x=3. Now we add 13x and 15x, that gives us 28x=3.  Now we divide by 28 on both sides. That gives us x=0.107

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Answer:

(-7, -3) (Answer A)

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{-(12 x) + 11 y = -75 | (equation 1)
{-(5 x) + 11 y = -89 | (equation 2)
Subtract 5/12 × (equation 1) from equation 2:
{-(12 x) + 11 y = -75 | (equation 1)
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Multiply equation 2 by 12/77:
{-(12 x) + 11 y = -75 | (equation 1)
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Subtract 11 × (equation 2) from equation 1:
{-(12 x)+0 y = 24 | (equation 1)
{0 x+y = -9 | (equation 2)

Divide equation 1 by -12:
{x+0 y = -2 | (equation 1)
{0 x+y = -9 | (equation 2)
Collect results:
Answer:  {x = -2                {y = -9

please note that the parentheses "{" should span over both equations but the editor doesn't allow that so I should it on both line, See attached example.










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