Question

Solve this
x +2y=5
3x + y = 5​

Answer 1

Answer:

Thus value of x=1 and y=2

Step-by-step explanation:

x +2y=5.

3x + y = 5.

x +2y=5--(1). ×1

3x + y = 5---(2). ×2

now,

(solving by elimination method)

x+2y = 5

6x+2y = 10

- - -

-5x = -5

x = 1

putting x=1 in equation(1)

we get,

x+2y=5

1+2y=5

2y = 5-1

y=4/2

y =2

Answer 2

Solve this: x + 2y = 5 and 3x + y = 5. The answer is (1, 2).

Explanation:

Given: x + 2y = 5, 3x + y = 5

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

3x + y = 5 ---- (2)

Multiplying 3 in equation 1, we get

3x + 6y = 15

3x + y = 5

_________

5y = 10

y = $\frac{10}{5}$

y = 2

Substitute y = 2 in equation 1.

x + 2 x 2 = 5

x + 4 = 5

x = 5 - 4

x = 1

So, the value of x and y is 1 and 2.

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