Question

Solve the system of equations by elimination 2x+y=-1 4x-y=7

Answer 1

Using elimination method, the value of  system of equations x = 1 and y = -3.

How to solve the equations by the elimination method?

When solving a system of equations using the elimination method, the first step is to make the coefficient of one of the variables to be equal.

Given;

2x + y = -1

4x - y = 7

Add both the equation, we get

2x + y + 4x - y = -1 + 7

6x = 6

x = 1

Also,

2x + y = -1

y = -1 - 2

y = -3

Therefore, the value of x = 1 and y = -3.

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