Answer: x = 3, y = -1
Step-by-Step Explanation:
=> 4x + 5y = 7 (Eq. 1)
=> y = 3x - 10 (Eq. 2)
Substitute value of ‘y’ from Eq. 2 in 1 :-
4x + 5y = 7
4x + 5(3x - 10) = 7
4x + 15x - 50 = 7
19x - 50 = 7
19x = 7 + 50
19x = 57
=> x = 57/19 = 3
Therefore, x = 3
Substitute value of ‘x’ in Eq. 2 :-
y = 3x - 10
y = 3(3) - 10
y = 9 - 10
=> y = -1
Therefore, y = -1
