0
The solution (not sum) to the equation 21 = 3c + 6 is as follows:
21 = 3c + 6
21 - 6 = 3c + 6 - 6
15 = 3c
3c = 15
3c/3 = 21/3
c = 7
Wiki User
∙ 2011-12-16 19:20:11
Add your answer:
Earn +20 pts
How do you do 4c plus 2 equals 3c plus 9?
4c+2 = 3c+9 4c-3c = 9-2 c = 7
17 - 3c equals 4c plus 3?
17-3= 4c+3c c=2
What is 3c plus 6 equals 18?
3c+6=18 3c+6-6=18-6 3c=12 3c÷3=12÷3 c=4
What is the answer to 2a plus b plus 3c equals 2a plus b plus 3c?
That's not even a question. It's only a statement that says that some number is equal to itself.
If a equals 2b and 4b equals 6c then a equals?
a=2b 4b=6c becomes 2b=3c a=3c
How do you do 4c plus 2 equals 3c plus 9?
4c+2 = 3c+9 4c-3c = 9-2 c = 7
17 - 3c equals 4c plus 3?
17-3= 4c+3c c=2
What is 3c plus 6 equals 18?
3c+6=18 3c+6-6=18-6 3c=12 3c÷3=12÷3 c=4
B plus b plus c plus c plus c plus c equals?
2b+3c
What is the answer to 2a plus b plus 3c equals 2a plus b plus 3c?
That's not even a question. It's only a statement that says that some number is equal to itself.
4 plus 3c equals 2 c plus 2 what does c equal?
4 + 3c = 2c + 2Subtract 4 from each side:3c = 2c - 2Subtract 2c from each side:c = -2
Is c plus c plus c equals 6 isolated?
If: 3c = 6Then: c = 2
What is the answer in 7(a plus 3)-c(a plus 3)?
Multiplying out the brackets it is: 7a+21-ac-3c
What is -7 equals -3c plus 93?
Doing it step by step:-7 = -3c + 933c = 7 + 933c = 100c= 33 1/3
If a equals 2b and 4b equals 6c then a equals?
a=2b 4b=6c becomes 2b=3c a=3c
What is 2c plus 4-3c equals -9 plus c plus 5?
2c + 4 - 3c = -9 + c + 5 -c + 4 = c - 4 -2c = -8 2c = 8 c = 4
What does c equals in 3c equals 2 14?
If you mean 3c = 214, then c = 68
