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Kristian Dudley
Mathematics
9 January, 08:16
Solve the system of equations: y=4x-3, y=-2x+9
+5
Answers (
1
)
Frances Spears
9 January, 08:17
0
y = 5
x = 2
Step-by-step explanation:
y = 4x - 3 ... (1)
y = - 2x + 9 ... (2)
Multiply equation (2) by 2
It becomes;
2y = - 4x + 18 ... (3)
Add equation (3) and (1)
It becomes;
3y = 15
y = 5.
Substitute y = 5 in equation (1)
It becomes;
5 = 4x - 3
Collecting like terms:
4x = 5 + 3
4x = 8
x = 8/4
x = 2
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