Question

3x+4y=18 , -2x+4y=18

Answer 1

`\boxed{x = 0}`

`\boxed{y = 9/2}`

Explanation:

`\textbf{\textrm{1. Eliminate the 4 by making one equation negative}}`

-(3x + 4y = 18)

-3x - 4y = -18

-2x + 4y = 18

-5x = 0

x = 0

`\textbf{\textrm{2. Plug X back into the equation to solve for y}}`

3(0) + 4y = 18

4y = 18

18/4 = y

y = 9/2