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pav-90 [236]
3 years ago
8

-(x + 2) - 2x = -2( x + 1)

Mathematics
2 answers:
Nikitich [7]3 years ago
8 0
-(x+2)-2x=-2(x+1)\\\\-x-2-2x=-2x-2\\\\-3x-2=-2x-2\ \ \ \ \ \ |add\ 2\ to\ both\ sides\\\\-3x=-2x\ \ \ \ \ \ \ \ |add\ 2x\ to\ both\ sides\\\\-x=0\\\\\boxed{x=0}
Ann [662]3 years ago
4 0
-(x + 2) - 2x = -2( x + 1) \\
-x-2-2x=-2x-2\\
-x=0\\
x=0
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Your friend Mel says he has an easier way to solve this problem. Here are the first steps in his method.
damaskus [11]

Simplifying

2x2 + 6x + 4 = 24

Reorder the terms:

4 + 6x + 2x2 = 24

Solving

4 + 6x + 2x2 = 24

Solving for variable 'x'.

Reorder the terms:

4 + -24 + 6x + 2x2 = 24 + -24

Combine like terms: 4 + -24 = -20

-20 + 6x + 2x2 = 24 + -24

Combine like terms: 24 + -24 = 0

-20 + 6x + 2x2 = 0

Factor out the Greatest Common Factor (GCF), '2'.

2(-10 + 3x + x2) = 0

Factor a trinomial.

2((-5 + -1x)(2 + -1x)) = 0

Ignore the factor 2.

Subproblem 1

Set the factor '(-5 + -1x)' equal to zero and attempt to solve:

Simplifying

-5 + -1x = 0

Solving

-5 + -1x = 0

Move all terms containing x to the left, all other terms to the right.

Add '5' to each side of the equation.

-5 + 5 + -1x = 0 + 5

Combine like terms: -5 + 5 = 0

0 + -1x = 0 + 5

-1x = 0 + 5

Combine like terms: 0 + 5 = 5

-1x = 5

Divide each side by '-1'.

x = -5

Simplifying

x = -5

4 0
3 years ago
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Answer:

Step-by-step explanation:

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Oduvanchick [21]

Answer:

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maxonik [38]
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