Simultaneous equations
2x + 4y = 1
3x - 5y = 7
Answers
Answered by
1
Step-by-step explanation:
2x + 4y = 1....(1)
3x - 5y = 7....(2)
multiply equation 1 by 3
6x + 12y = 3..(3)
multiply equation 2 by 2
6x - 10y = 14..(4)
Subtracting 3 from 4
-22y= 11
y = - 1/2
2x + 4y = 1
2x + 4(1/2) = 1
2x + 2 =1
2x = 1 - 2
2x = -1
x = -1/2
x = -1/2
y = - 1/2.
Answered by
0
Answer:
y = -0.5
x = 1.5
Step-by-step explanation:
6x + 12y =3
6x -10y = 14
- take them away to cancel x
22y = -11
y = -0.5
x = 1.5
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