Question

x+y+z=5;2x_y+z=9;x_2y+3z=16​

Answer 1

Answer:

Given,

x + y + z = 5 .....(1)

2x - y + z = 9 .....(2)

x - 2y + 3z = 16 .....(3)

Subtracting (2) from (1);

- x + 2y = -4 .....(4)

Multiplying (1) by 3 and subtracting (3) from the product;

2x +5y = -1 ......(5)

Solving (4) and (5), we get;

x = 2 and y = -1

Hence, z = 4

Therefore,

x = 2 \: \: y = -1 \: \: z = 4x=2y=−1z=4

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