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I can't think anymore how to solve this: Can you help?
7 less than 3 times a whole number is 11 less than 4 times that number. Find the number and show how you solved it, PLEASE!!

2006-08-14 12:22:33 · 10 answers · asked by bobbysgirlmeri 2 in Science & Mathematics Mathematics

10 answers

3x-7= 4x -11
-3x -3x
-7 = x-11
+11 +11
x = 4

2006-08-14 12:27:51 · answer #1 · answered by Anonymous · 0 0

4

2006-08-14 19:51:32 · answer #2 · answered by Anonymous · 0 0

Okay. Start by putting words into equations. You are looking for 3x-7 = 4x-11. On the left side, you are looking at 7 less than 3 times a number; on the right side, you are looking at 11 less than 4 times that number. Now you have simple algebra. Adding -3x to each side and 11 to each side, you get
4=x. There is your answer.

2006-08-14 19:30:22 · answer #3 · answered by Jon S 2 · 0 0

7 less than 3 times a whole number......3x-7
11 less than 4 times the same number.........4x-11
is means =

so we have 3x-7=4x-11

now, we isolate the variable, keeping in mind, you do to one side what you do to the other

3x-7=4x-11
3x-7+11=4x-11+11
3x+4=4x
3x-3x+4=4x-3x
4=1x
or x=4

2006-08-14 19:34:30 · answer #4 · answered by lookatalltheluv 1 · 0 0

you need to break the whole thing.

First (Read first part)
====
7 less than 3 times a whole number

let whole number = X
3 times of it =3X
and 7 less than it =3X-7 (note it)

SECOND (Read 2nd part)
========

11 less than 4 times that number

that number = X (Since it is refering to same # before)
4 times it = 4X
11 less than it = 4X-11 (Note it)

---------------------------------------------------------
your equation by saying "IS" mean, that what he said before "is" is equal to what he said After "is"
--------------------------------------------------------
so,

3X-7 = 4X-11
11-7=4X-3X
4 = X

so X=4.

2006-08-14 21:40:35 · answer #5 · answered by Da Sahar SToRaY 2 · 0 0

3x-7=4x-11
3x-4x=-11+7
-1x=-4
x= 4

2006-08-14 19:30:30 · answer #6 · answered by wazullah 3 · 0 0

Just follow court of the crimson king - he laid it out nicely for you.

2006-08-14 19:31:55 · answer #7 · answered by MollyMAM 6 · 0 0

7 - 3x = 11 - 4x
-11 +3x -11 + 3x
----------------------------
-4 = -x

x = 4

2006-08-14 20:27:11 · answer #8 · answered by jack_k744 3 · 0 0

hmmm homework help i see.....well you're never gonna learn if you keep asking people ya know!!! so figure it out on your own. use your brain, that's what it's their for!!! THINK!!!

2006-08-14 19:28:14 · answer #9 · answered by luvshorses 2 · 0 0

i think its eleven

2006-08-14 19:31:27 · answer #10 · answered by NESSY 1 · 0 0

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