Question

x+y=7;y+z=4;z+x=1 Solve the simultaneous equation​

Answer 1

Answer:

x=2, y=5 ,z=1

Step-by-step explanation:

x+y=7 ••••(1)

y+z=4••••(2)

z+x=1 ••••(3)

substract (1) and (2)

(x+y)-y-z=7-4

x-z=3 ••••4

substract 2and 3

y+z-z-x=4-1

y-x=3 •••5

substract 1 and 3

x+y-z-x=7-1

y-z=6 •••6

Let's add 3and 4

x+z+x-z=1+3

2x=4

x=4/2

x=2

Let's add 1and 5

x+y-x+y=7+3

2y=10

y=10/2

y=5

Let's substract2 and 6

y+z-y+z= 6-4

2z=2

z=1

Answer 2

Answer:

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