Question

solve this question. give me answer please fast ​

Answer 1

Step-by-step explanation:

First write the four equations :-

A + B = 10 --> Equation 1

A + C = 11 --> Equation 2

B + D = 4 --> Equation 3

C - D = 3 --> Equation 4

A + B = 10

A = 10 - B --> Equation 5

Substitute Equation 5 in Equation 2

10 - B + C = 11

- B + C = 11 - 10

- B + C = 1

C = 1 + B --> Equation 6

Substitute Equation 6 in Equation 4

1 + B - D = 3

B - D = 2

-D = 2 - B

D = -2 + B --> Equation 7

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