Respuesta :

Answer:

OB=4

Step-by-step explanation:

Step 1: Subtract 5 from both sides.

4x+5−5=21−5

4x=16

Step 2: Divide both sides by 4.

4x/4=16/4

x=4

Answer:

x=4

darshansganesh

Answer:

OB: 4

Step-by-step explanation:

4x+5=21

Next step is to subtract 5 on both sides to keep it an equation.

4x=21-5

4x=16

Finally, divide by 4 on both sides for x to be alone and for it to stay and equation.

x=4!

There you go! Hope this helped, this is my first time answering a question! :p