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Haylee Ford
Mathematics
16 June, 08:50
2x - 3y = - 1
y = x - 1
Solve for both x and y using elimination.
+5
Answers (
1
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Caden Owen
16 June, 09:11
0
Solve the following system using elimination:
{2 x - 3 y = - 1 | (equation 1)
{y = x - 1 | (equation 2)
Express the system in standard form:
{2 x - 3 y = - 1 | (equation 1)
{-x + y = - 1 | (equation 2)
Add 1/2 * (equation 1) to equation 2:
{2 x - 3 y = - 1 | (equation 1)
{0 x - y/2 = (-3) / 2 | (equation 2)
Multiply equation 2 by - 2:
{2 x - 3 y = - 1 | (equation 1)
{0 x+y = 3 | (equation 2)
Add 3 * (equation 2) to equation 1:
{2 x+0 y = 8 | (equation 1)
{0 x+y = 3 | (equation 2)
Divide equation 1 by 2:
{x+0 y = 4 | (equation 1)
{0 x+y = 3 | (equation 2)
Collect results:
Answer: {x = 4, y = 3
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