Final Result : 2 • (5c - 2d)
Simplifying
3c + -9d + 7c + 5d = 0
Reorder the terms:
3c + 7c + -9d + 5d = 0
Combine like terms: 3c + 7c = 10c
10c + -9d + 5d = 0
Combine like terms: -9d + 5d = -4d
10c + -4d = 0
Solving
10c + -4d = 0
Solving for variable 'c'.
Move all terms containing c to the left, all other terms to the right.
Add '4d' to each side of the equation.
10c + -4d + 4d = 0 + 4d
Combine like terms: -4d + 4d = 0
10c + 0 = 0 + 4d
10c = 0 + 4d
Remove the zero:
10c = 4d
Divide each side by '10'.
c = 0.4d
Simplifying
c = 0.4d