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Carla Cain
Mathematics
13 December, 18:13
Solve the simultaneous equations
3x+y=14
x+2y=3
+3
Answers (
2
)
Arjun Bell
13 December, 18:17
0
I use the substitution method, but you can also use elimination and matrix
1. Solve for y in 3x+y=14
y=14-3x
2. Substitute y=14-3x into x+2y=3
-5x+28=3
3. Solve for x in - 5x+28=3
x=5
4. Substitute x=5 into y=14-3x
y=-1
5. Therefore,
x=5
y=-1
Have a nice day : D
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Leanna Blevins
13 December, 18:21
0
You can use a bunch of different methods here, but I'll use substitution.
For the second equation, you can bring the 2y to the right side to isolate the x:
x=-2y+3
You can then substitute this into the first equation to find out y:
3x+y=14
3 (-2y+3) + y=14
-6y+9+y=14
-5y=5
y=-1
Now you can plug in y to the second equation to find x:
x=-2y+3
x=-2 (-1) + 3
x=2+3
x=5
Therefore:
x=5
y=-1
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