Question

Solve the system using elimination. 3x – y = 28 3x + y = 14

Answer 1

Answer:

The value of x=10.5 and y=3.5.

Step-by-step explanation:

Given : Equations $3x-y=28$ and $x+y=14$

To find : Solve the system using elimination?

Solution :

Equitation 1 -$3x-y=28$

Equation 2 - $x+y=14$

Eliminate y from both the equation by adding them,

$3x-y+x+y=28+14$

$4x=42$

$x=\frac{42}{4}$

$x=10.5$

Eliminate x by multiplying (2) by 3 and subtract from (1),

$3x-y-3x-3y=28-42$

$-4y=-14$

$y=\frac{14}{4}$

$y=3.5$

Therefore, The value of x=10.5 and y=3.5.

Answer 2

(7,-7) would be your answer