Question

solve 2x + y = 7
4 x - 3y =-1​

Answer 1

Answer:

The given system of equations is

2x + y = 7 ... (i)

4x - 3y = -1. ...(ii)

From (i), we get

2x + y = 7

⇒ y = (7 - 2x).

Substituting y = (7 - 2x) in (ii), we get

4x - 3y = -1

⇒ 4x - 3 (7 - 2x) = - 1

⇒ 4x - 21+ 6x = -1

⇒ 10x - 21 = -1

⇒ 10x = - 1 + 21

⇒ 10x = 20

⇒ x = 20/10

⇒ x = 2.

Substituting x = 2 in y = (7 - 2x), we get

y = (7 - 2x)

⇒ y = 7 - 2(2)

⇒ y = 7 - 4

⇒ y = 3.

Hence, the solution is x = 2, y = 3.

Step-by-step explanation:

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