Question

If 3220 = 9c+7, what is the value of c?
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Answer 1

c=357

Explanation:

3220=9c=7

Move variable to the left-hand side and change its sign

-9c+3220=7

Move constant to the right-hand side and change its sign

-9c=7-3220

Calculate the difference

-9c=-3213

Divide both sides of the equation by -9

c=357