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Francesca Jenkins
Mathematics
Yesterday, 21:41
Solve the following system of equations.
2x-3y=8
-2x+6y=-20
+2
Answers (
1
)
Matthew Owens
Yesterday, 21:55
0
Solve the following system:
{2 x - 3 y = 8 | (equation 1)
{6 y - 2 x = - 20 | (equation 2)
Add equation 1 to equation 2:
{2 x - 3 y = 8 | (equation 1)
{0 x+3 y = - 12 | (equation 2)
Divide equation 2 by 3:
{2 x - 3 y = 8 | (equation 1)
{0 x+y = - 4 | (equation 2)
Add 3 * (equation 2) to equation 1:
{2 x+0 y = - 4 | (equation 1)
{0 x+y = - 4 | (equation 2)
Divide equation 1 by 2:
{x+0 y = - 2 | (equation 1)
{0 x+y = - 4 | (equation 2)
Collect results:
Answer: {x = - 2
{y = - 4
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