Question

solve the equation x-2y=1;x+2y=5​

Answer 1

Answer:

your answer is y=1

Step-by-step explanation:

x- 2y=1

x+2y=5

___________

4y=4

y=1

Answer 2

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Hey Mate!!

x - 2y = 1

=> x = 1 + 2y ......(1)

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

By substituting (1) in (2),

1 + 2y + 2y = 5

=> 1 + 4y = 5

=> 4y = 5 - 1

=> 4y = 4

=> y = 4 ÷ 4

=> y = 1

By substituting y in (1),

x = 1 + 2y

=> x = 1 + 2(1)

=> x = 1 + 2

=> x = 3