Answer:
x = 1 , y = 2
Explanation:
Solve the following system:
{5 x + 2 = 7 | (equation 1)
y = x + 1 | (equation 2)
Express the system in standard form:
{5 x+0 y = 5 | (equation 1)
-x + y = 1 | (equation 2)
Add 1/5 × (equation 1) to equation 2:
{5 x+0 y = 5 | (equation 1)
0 x+y = 2 | (equation 2)
Divide equation 1 by 5:
{x+0 y = 1 | (equation 1)
0 x+y = 2 | (equation 2)
Collect results:
Answer: {x = 1 , y = 2