Question

Elimination using Addition and Subtraction 3y - x = 2 ; - 2y - x = - 18​

Answer 1

Answer:

x = 10, y = 4

Step-by-step explanation:

3y - x = 2--------------1

-2y - x = -18-----------2

multiply by (+) equation 2

3y - x = 2-------------1

2y + x = 18-----------3

adding equation 1 and 2

5y = 20

y = 20/5

y = 4

substituting y = 4 in eq 1

3(4) - x = 2

12 - x = 2

-x = 2 - 12

-x = -10

x = 10