Question

Linear Combination 3x + 2y = − 4 4x − y = 13

Answer 1

Answer:

y= -11.18;  x=0.4545

Step-by-step explanation:

We have two equations and two variables x and y, we can solve the equations to find the values of unknown x and y.

equation 1  3x+2y=-4

equation 2 4x-y=13

equation2 × 2 + equation1

11x=5

x=5÷11 =0.4545

substituting the value of x in any one of the equations would lead us to find the value of y. I am substituting the value of x in equation2

20÷11  - y=13

y= 20÷11 -13

y=1.818-13

y= -11.18

Thus the value of x and y can be found out if two equation with two variables are given.