Answer:
The operation should be substracting 11 from both sides of the equation.
x=4
Step-by-step explanation:
We have the equation
[tex]x+11=15[/tex]
We have to apply an operation to isolate x.
The operation should be substracting 11 from both sides of the equation:
[tex]x+11+(-11)=15+(-11)\\\\x+(11-11)=15-11\\\\x+0=4\\\\x=4[/tex]