dawnsoderstrom dawnsoderstrom
  • 24-08-2017
  • Mathematics
contestada

3 times the difference of a number and 7 is 18

Respuesta :

texaschic101
texaschic101 texaschic101
  • 24-08-2017
" the difference " means subtract

3(n - 7) = 18
3n - 21 = 18
3n = 18 + 21
3n = 39
n = 39/3
n = 13 <== ur number
Answer Link

Otras preguntas

Which equation represents the graph below?
Jonathan is cooking burgers at Top Burger. On Friday he worked 8 hours, and on Saturday he worked 6 hours. He gets paid 12 dollars per hour. How much did he mak
y=2x^2-18x+40 solved in square root
A grocery store chain surveys customers on their shopping habits. One question in the survey asks for monthly grocery expense. Another question asks for the num
what's the answer to this please help
What should the student say to the astronaut to explain the shape of the planets' orbits around the Sun? In your answer, discuss distance from the Sun and the s
Why did dictators rise to power in several European nations in the 1930s?
What is the mean of the data set? {7, 9, 5, 4, 3, 6, 8} Enter your answer in the box.
A rectangle is 28 cm long and 9 cm wide what is thr perimeter of the rectangle pls hurry
Determine the mass of an object that has a volume of 88.6 mL and a density of 7.77 g/mL. 0.0877 g 80.8 g 96.37 g 688 g 11.4 g 10 points