# What is 5c plus 15 equals 30?

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5c + 15= 30
- 15 -15

5c = 15

If your solving for just c.....

5c/5 = 30/5

c= 3
Hope this helps
adding further your question is incomplete you must ask for the value of C, since its a arithmetic equation.
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# 15 plus what equals -30?

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NO,because in quadratic equation highest power of a variable is 2. e.x. 4x 2 -20x+10=0.

205

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The value of c is 6
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Yes, 15 + 15 = 30