Question

Solve this system of equations
4x-6y=-20
-2x+4y=6

Answer 1

Thus, the values of x and y that are solutions to the simultaneous equations are; x = -11 and y = -4

How to Solve Simultaneous Equations?

We are given the simultaneous equations;

4x - 6y = -20 -----(eq 1)

-2x + 4y = 6 -----(eq 2)

Multiply equation 2 by 2 and eq 1 by 1 to get;

-4x + 8y = 12 -----(eq 3)

Add eq 3 to eq 1 to get;

2y = -8

y = -4

Answer 2

4x-6y=-20

-2x+4y=6

per combination

2(-2x+4y)=6)

-4x+8y=12

we write :

4x-6y=-20

-4x+8y=12

2y=-8

y=-4

-2x+4y=6

-2x-16=6

-2x=+6+16

-2x=22

x=-11

Explanation: