The equation given is:
[tex]2x+3y=36[/tex]We are asked what's the value of x when y = 36, then, we replace y = 6 in the equation and solve for x:
[tex]\begin{gathered} 2x+3\cdot6=36 \\ 2x+18=36 \\ 2x=18 \\ x=18÷2 \\ x=9 \end{gathered}[/tex]The value of x is 9, when y = 6
