i need help with this math problem:
12(3x+4x)+3(12x+7)
2007-02-18 03:53:36 · 6 answers · asked by xmillkaywayx 2 in Science & Mathematics ➔ Mathematics
I assume you need to simplify the expression, correct?
12(3x + 4x) + 3(12x + 7)
First: eliminate parenthesis --- distribute the outer terms with the terms in parenthesis.
12(3x) + 12(4x) + 3(12x) + 3(7)
36x + 48x + 36x + 21
Sec: combine "like" terms --- combine the coefficients with the "x" variable.
84x + 36x + 21
120x + 21
2007-02-18 04:12:40 · answer #1 · answered by ♪♥Annie♥♪ 6 · 0⤊ 1⤋
add like terms in the first parenthesis
12(7x) + 3(12x+7)
distribute
84x + 36x + 21
combine like terms
120x + 21
2007-02-18 11:57:49 · answer #2 · answered by 7 · 0⤊ 0⤋
12(3x + 4x) + 3(12x + 7) =
12(7x) + 36x + 21 =
84x + 36x + 21 =
120x + 21 - 21 = 0 - 21
120x = - 21
120x/120 = - 21/120
x = - 21/120
x = 7/40
- - - - - - - - -s-
2007-02-18 12:10:24 · answer #3 · answered by SAMUEL D 7 · 0⤊ 1⤋
36x+48x+36x+21=120x+21
=3(40x+7)
2007-02-18 12:06:50 · answer #4 · answered by procrastinator 4 · 0⤊ 0⤋
What is the question?
This is just an expression sitting here. What is suppose to be done with it?
This is like me saying...."please help me with this problem":
5x
See what I mean?
2007-02-18 11:57:30 · answer #5 · answered by Anonymous · 1⤊ 0⤋
what are we going to do with this??? simplify???
here's it.....
12(7x)+ 36x + 21
84x + 36x + 21
120x+21
that's it if it's just simplify.........
2007-02-18 12:00:11 · answer #6 · answered by dipennepal 1 · 0⤊ 0⤋