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2007-12-20 10:14:14 · 3 answers · asked by Kimberly M 1 in Science & Mathematics Mathematics

3 answers

-3(8x+11)=6(-4x-13)
distribute

left side:
-3 times 8x = -24x
-3 times 11 = -33
so for the left side it's -24x-33

right side:
6 times -4x = -24x
6 times -13 = -78
so for the right side it's -24x-78

the whole thing:
-24x-33=-24x-78
combine like terms;

add the -24x to the -24x
(if it's a negative you make it a positive to cancel it out)

so its -33=-78,
which isn't true so x=undefined.

hope that helped :]

2007-12-20 10:26:54 · answer #1 · answered by Britt (: 2 · 0 0

Simplifying
-3(8x + 11) = 6(-4x + -13)

Reorder the terms:
-3(11 + 8x) = 6(-4x + -13)
(11 * -3 + 8x * -3) = 6(-4x + -13)
(-33 + -24x) = 6(-4x + -13)

Reorder the terms:
-33 + -24x = 6(-13 + -4x)
-33 + -24x = (-13 * 6 + -4x * 6)
-33 + -24x = (-78 + -24x)

Add '24x' to each side of the equation.
-33 + -24x + 24x = -78 + -24x + 24x

Combine like terms: -24x + 24x = 0
-33 + 0 = -78 + -24x + 24x
-33 = -78 + -24x + 24x

Combine like terms: -24x + 24x = 0
-33 = -78 + 0
-33 = -78

Solving
-33 = -78

Couldn't find a variable to solve for.

This equation is invalid, the left and right sides are not equal, therefore there is no solution.

2007-12-20 18:31:30 · answer #2 · answered by Anonymous · 0 0

-24x-33=-24x-78
0x=-45
undefined

2007-12-20 19:08:21 · answer #3 · answered by Dave aka Spider Monkey 7 · 0 0

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