SOLUTION: Wright an equasion and solv to answer each question. Seven times a number decreased by 2 is 19. What is the number.

Question 58066This question is from textbook
: Wright an equasion and solv to answer each question.
Seven times a number decreased by 2 is 19. What is the number. This question is from textbook

Answer by mystic1306(20) (Show Source): You can put this solution on YOUR website!
seven times a number is 7x
decreased by two means minus 2
is 19 means =19
So...
7x-2=19
solve for x by getting 7x alone
you do this by adding 2 to both sides
7x-2+2=19+2
as you see on the left -2+2 cancels out and you are left with 7x
7x=19+2
7x=21
divide both sides by 7
7x/7=x
21/7=3
x=3
RELATED QUESTIONS
Wright an equasion and solv to answer each question. Seven times a number decreased by 2 (answered by 303795)

Wright the equasion and solv to answer each question. Question; seven times a number... (answered by stanbon)

wright these is equations 1: seventeen is four times the sum of a number and two... (answered by solver91311)

A number is decreased by seven. Then, the new number is multiplied by 3 to get an answer... (answered by Ashley_UConn)

A number is decreased by seven. Then, the new number is multiplied by 3 to get an answer... (answered by rfer)

seven times a number decreased by 12 equals 3 times the number increased by 4. what is... (answered by TimothyLamb)

If seven times a number decreased by eight is the same as two times the number increased... (answered by jim_thompson5910)

one decreased by the difference between 18 and seven times a number is... (answered by Cromlix)

Please help I need to define a variable, write an inequality and solve each problem. My... (answered by Boreal)