The value of the "x" will be "13".
The given equation is:
→ [tex]x+8=21[/tex]
By subtracting "8" from both sides of the equation, we get
→ [tex]x+8-8=21-8[/tex]
By applying the subtraction, we get
→ [tex]x = 13[/tex]
Thus the above answer is correct.
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