Determine the given 2y - x = 8 ⇒ equation 1 y - 2x = -5 ⇒ equation 2
Get y equivalent from equation 2: y = 2x - 5 ⇒ equation 3
Substitute y = 2x - 5 to equation 1 2(2x-5) - x = 8
Distribute and Simplify 4x - 10 - x = 8 3x = 10 + 8 ⇒ combine like terms by transposing it to other side 3x = 18 x = 6 ⇒ divide both sides by 3 to get the value of x
Substitute the value of x to equation 3 y = 2(6) - 5 y = 12 - 5 y = 7
