It is a linear equation in one unknown, d.
Chat with our AI personalities
The equation 3 + 4d = 39 can be solved by subtracting 3 from both sides, resulting in 4d = 36. Then, divide both sides by 4 to find that d = 9.
d = 2
90
90
7y + 18 = 39 Therefore, 7y = 39 - 18 = 21 y = 21/7 y = 3
3n+18 = 39 -4n 3n+4n = 39 -18 7n = 21 n = 3