Salutations!
This equation is substituting variables, means that instead of the variable you need to enter the given number.
[tex]2x+2y=20[/tex]
Where as [tex]x =7[/tex] and [tex]y = 3[/tex]
[tex]2*7 +2*3=50[/tex]
[tex]2*7=14[/tex]
[tex]2*3=6[/tex]
[tex]14+6=20[/tex]
Thus, the answer is false! After all the calculation you get the answer as [tex]20[/tex]
Hope I helped (:
Have a great day!
