Solve for x. Algebra Help
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Solve for x. Algebra Help

[From: ] [author: ] [Date: 11-09-26] [Hit: ]
- 12....-12___________2x = -32ok, thats better.......

......- 12....-12
___________

2x = -32

ok, that's better. but that x, he's still got someone covering for him,

yes, 2, i'm looking at you. unhand that x!

so let's see here....how do we "un-double"? oh, i know this one...we halve!

(i have a special cleaver i keep on hand for this, i call it "divide by 2").

(2x)/2 = -32/2.

and as anyone who has ever dated twins can tell you, half of a double is a single.

in math-talk, this means: (2x)/2 is...yes! x in disguise!!!!

so...(2x)/2 = x (gotcha, you shifty x!)...that's the left side.

but what...what is it EQUAL to? oh, yeah, we still have that other side to fix up.

-32/2 = -16 (yes, it's hard to count up to 32 by 2's...but i did it. yes, i'm awesome).

so....x = -16....ta da!!!!!

hmm...do you suppose i might have made a boo-boo? well, i'm a bit paranoid

every since the cavity search on my last airline trip so...let's just check this out.

if, x = -16, does that work in our original equation?

6(-16+2) = ???? 4(-16-5)......computing.......

-96 + 12 = ???? -64 - 20 ...i'm the operator with my pocket calculator.....

-84 = ???? -84 .....yes! yes! sweet mother of pearl yes!!!!!

-
1. 6x + 12 = 4x - 20
2x + 12 = -20
2x = -32
x = -16

2. 2x - 5 = 13
2x = 18
x = 9

3. 2x - 6 + 3x = 14
5x - 6 = 14
5x = 20
x = 4

-
1. 6(x + 2) = 4(x - 5)
6x + 12 = 4x - 20
2x = -32
x = -16

2. 4x - 5 = 2x + 15
2x = 20
x = 10

3. 2(x - 3) + 3x = 14
2x - 6 + 3x = 14
5x - 6 = 14
5x = 20
x = 4

-
6(x+2)=4(x-5)
6x+12=4x-20
2x=-32
x=-16

4x-5=2x+13
2x=18
x=9

2(x-3)+3x=14
2x-6+3x=14
5x-6=14
5x=20
x=4

-
1. 6x+12=4x-20 x= -16
2. x=9
3. 2x-6+3x=14 5x-6=14 x=4
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