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Find the value of c.
$latex c\;\; +\;\; 7 \quad=\quad 18$

  • 15

  • 17

  • 11

  • 9

The correct answer is 11.


Please Note:
Use inverse operations to solve the equation for a variable.


Solution:
To solve the given equation for variable c, we use inverse operations.

Given equation:
c + 7 = 18

Now, subtract 7 from both sides and simplify.

c + 7 – 7 =  18 - 7

⇒        c   =   11

So, the value of c is 11.