Question

. If 2x + y = 3, x +2y = 12 then x+ y=?​

Answer 1

Solution:

Given That:

→ 2x + y = 3 — (i)

→ x + 2y = 12 — (ii)

Adding (i) and (ii), we get:

→ 3x + 3y = 15

→ 3(x + y) = 15

Dividing both sides by 3, we get:

→ x + y = 5

★ Which is our required answer.

Answer:

• The value of x + y is 5.

For More:

Lets calculate the values of x and y.

→ 2x + y = 3 — (i)

→ x + y = 5 — (ii)

Subtracting (ii) from (i), we get:

→ x = 3 - 5

→ x = -2

Substituting the value of x in (ii), we get:

→ -2 + y = 5

→ y = 7

Therefore:

→ (x, y) = (-2, 7) ★