4c+2 = 3c+9
4c-3c = 9-2
c = 7
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17-3= 4c+3c c=2
To find the product of 4c and 3c, you multiply the coefficients (4 and 3) together to get 12. Then you multiply the variables (c and c) together to get c^2. Therefore, the result of 4c times 3c is 12c^2.
When c = -3 then 4c + 5c - 2 = [4 x -3] + [5 x -3] - 2 = -12 +(-15) - 2 = -12 -15 -2 = -29
If you mean 3c = 214, then c = 68
It equals 10c+2 because you have to combine like terms when you use variables. So since there is a 7c and a 3c you add those because it says plus add you end up with 10c+2 because you are still adding the 2.