You would need to see the rest of the equation to plug in 7 for x. Treat it as y=equation and replace any x with 7.
Let the number be x
3x - 5 = 14
3x = 19
X = 6 1/3 or 6.333333...
Answer:
x= 30
Step-by-step explanation:
3x + 50 = 140
3x = 140 -50
3x = 90
x = 90/3
x = 30
Answer:
Step-by-step explanation:
(N)0.05 + (17-N)0.1 = M; M = amount of money I have.
Or 1.7-0.05N = M.