number one. 70a - 42b/ - 14
number two. 3/4 (8x + 12y) - 5/7 (21x - 35y)
number three. 11/ 5/ - 6
number four. find a number between 5/11 and 13/7
2006-12-26 17:55:16 · 8 answers · asked by Jay 3 in Science & Mathematics ➔ Mathematics
You need to be careful how you write these.
1) I think you mean (70a - 42b)/(-14).
This is the same as -1/14(70a) - 1/14(-42b), or -5a + 3b.
2) Distribute through: 3/4(8x) + 3/4(12y) - 5/7(21x) - 5/7(-35y)
Canceling, you get 6x + 9y - 15x + 25y, or -9x + 34y.
3) 11/5/-6 is the same as 11/5 x -1/6, or -11/30.
4) Since 5/11 is less than 1 and 13/7 is greater than 1, might as well just pick 1. :)
2006-12-26 18:00:57 · answer #1 · answered by Jim Burnell 6 · 0⤊ 0⤋
Can you please clarify the questions:
For 1 and 3, parenthesis would be nice
for 2, does the expression = 0, and are you solving for a y in terms of x, or are you just simplifying?
and for 4, there are lots of numbers between 5/11 and 13/7. are you looking for a whole number?
2006-12-27 02:00:35 · answer #2 · answered by pinkpearls 3 · 0⤊ 1⤋
Ok on #2 u distribute then set them equal.
2006-12-27 01:58:03 · answer #3 · answered by Lauren 3 · 0⤊ 0⤋
#2
-9x+34y
2006-12-27 05:50:39 · answer #4 · answered by akira 2 · 0⤊ 0⤋
eww i hate math
2006-12-27 02:02:28 · answer #5 · answered by <3> 1 · 1⤊ 3⤋
wear your hat straight and maybe I'll help you.
2006-12-27 01:57:00 · answer #6 · answered by Anonymous · 1⤊ 2⤋
ahhhhh i suck at math
2006-12-27 02:04:02 · answer #7 · answered by Anonymous · 0⤊ 4⤋
math is dumb
2006-12-27 02:03:23 · answer #8 · answered by Mark 2 · 0⤊ 3⤋