we have the equation
-5x+3(x+5)=11
solve for x
Apply distributive property left side
-5x+3(x)+3(5)=11
-5x+3x+15=11
Combine like terms
-2x+15=11
substract 15 on both sides
-2x+15-15=11-15
simplify
-2x=-4
Divide by -2 on both sides
-2x/-2=-4/-2
simplify
x=2