Answer:
c=2
Explanation:
collect like terms 3c+4c=7c
move the constant to the right and change its sign(-13 becomes 13)
then add 1+13=14
next divide both sides of the equation by 7
14÷7=2
C=2
Isolate the variable by dividing each side by factors that don't contain the variable.
3C + 4C + -13 = 1
(3C + 4C) + (-13) = 1
Combine like terms.
7C + -13 = 1
Add 13 to both sides.
7C = 14
Divide both sides by 7.
C = 2
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