Answer:
The answer to your question is letter C
Step-by-step explanation:
Equations
3x - y = 14 ----------- (I)
4x + y = 21 ----------- (II)
Solve the system of equations by the elimination method.
3x - y = 14
4x + y = 21
7x 0 = 35
Solve for x, divide both sides by 7
7x/ 7 = 35/7
x = 5
Substitute x in equation I
3(5) - y = 14
15 - y = 14
Subtract 15 in both sides
15 - 15 - y = 14 - 15
Simplify
- y = -1
Multiply by -1
y = 1
Solution
(5, 1)
