Answer:
(5, 6 )
Explanation:
Given the 2 equations
2x - y = 4 → (1)
3x + y = 21 → (2)
Adding the 2 equations term by term will eliminate y
5x + 0 = 25
5x = 25 ( divide both sides by 5 )
x = 5
Substitute x = 5 into either of the 2 equations and solve for y
Substituting into (2)
3(5) + y = 21
15 + y = 21 ( subtract 15 from both sides )
y = 6
solution is (5, 6 )