Is this the right answer
Favorites|Homepage
Subscriptions | sitemap
HOME > Mathematics > Is this the right answer

Is this the right answer

[From: ] [author: ] [Date: 11-08-31] [Hit: ]
To check this answer, insert it into the original equation in place of x.See it wasnt too hard,Nicole, was it?-Philo is correct,......
Is this the correct answer to the question? If not please give me the right answer and show your steps! thanks!
Solve for x
2(6x-1)+2(2x+5)=120 I got 2 I don't think it's right though _-_

-
Good Afternoon, Nicole. Allow me to explain how to solve these types of problems.

2(6x - 1) +2(2x + 5) = 120. Multiply each expression by the coefficient in front of it,

12x -2 + 4x + 10 = 120. Group like terms, watching the sign changes!

12x + 4x = 120 +2 -10. Combine like terms:

16x = 112. Divide both sides by 16 to solve for 'x'.

x = 7. To check this answer, insert it into the original equation in place of 'x'. See it wasn't too hard,

Nicole, was it?

-
Philo is correct, answer isn't 2, it's 7. You can check it by replacing x with '7' in the equation.

2(6x-1)+2(2x+5)=120
2(6(7)-1)+2(2(7)+5)=120
2(42-1)+2(14+5)=120
2(41)+2(19)=120
82+38=120
120=120
x=7

-
2(6x-1)+2(2x+5)=120
12x - 2 + 4x + 10 = 120 ... expand brackets
16x + 8 = 120 ... collect
16x = 112 ... subtract 8 from both sides
x = 7

2(6*7 - 1) + 2(2*7+5)
= 2*41 + 2*19
= 2(41 + 19)
= 2*60
= 120 QED

-
12x-2+4x+10=120
16x=120-10+2
16x=112
divide both numbers with 16
x=112/16
x=7

:) hope i helped

-
2(6x – 1) + 2(2x + 5) = 120
12x – 2 + 4x + 10 = 120
16x + 8 = 120
16x = 112
x = 7
1
keywords: the,answer,right,this,Is,Is this the right answer
New
Hot
© 2008-2010 http://www.science-mathematics.com . Program by zplan cms. Theme by wukong .