8x - 6y=-16
5x + y = 28

In using Elimination?

x=4

y=8

Step-by-step explanation:

8x - 6y=-16 Equation 1

5x + y = 28 Equation 2

To solve with elimination method

Multiply equation 2 by 6, the coefficient of y in equation 1, so y can have the same coefficient.

6(5x + y = 28)

30x+6y=168 Equation 3

8x-6y=-16 Equation 1

Add equation 1 and equation 3 to eliminate y

30x+8x=38x

6y+(-6y)=6y-6y=0

168+(-16)=168-16=152

38x=152

Divide both sides by 38

38x/38=152/38

x=152/38

x=4

Substitute x for 4 in equation 2

5x + y = 28

5(4)+y=28

20+y=28

Make y the subject

y=28-20

y=8

x is variable or an unknown value to find

example:

2x = 5 which means x = 3