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likoan [24]
2 years ago
11

( x + 3 ) + ( − 7 x − 1 )

Mathematics
2 answers:
lora16 [44]2 years ago
8 0

Answer:

-6x +2

Step-by-step explanation:

( x + 3 ) + ( − 7 x − 1 )

Combine like terms

x -7x   +3 -1

-6x +2

Readme [11.4K]2 years ago
7 0

Answer:

-6x + 2.

Step-by-step explanation:

  • ( x + 3 ) + ( -7x - 1 )

Remove brackets.

  • x + 3 -7x - 1

Rewrite as like terms.

  • -7x + x + 3 - 1

Calculate .

  • -6x +2.
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Answer:

99°

Step-by-step explanation:

Internal Angles of triangles ALWAYS add up to 180°

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We can get rid of the like terms by either <em>adding </em>or <em>subtracting </em>them.

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We can then subtract 50° from both sides.

<em>5x° = 180° - 50°</em>

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We then make x the subject and divide both sides by 5°

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x was our unknown so where there is x we put 26

The angle on the far left is simply 26°

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If you simplify that, you get (104-5)°

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If you want to ensure that your answer is correct, simply add the angles. They <u><em>should always</em></u> add up to 180° if you're working with a triangle

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Step-by-step explanation:

Hope This Helps! : )

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