Can someone help answer these 2 problems.

[ThankYouForYourHelp]

I have been having problems trying to answer these two problems. I answer the first one but I am worried the answer i have is wrong.

 

[mmm4444bot]

… I answer the first one but I am worried the answer i have is wrong.

Please post your work on the first exercise, so that members can see what you've done. Thank you!

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[ThankYouForYourHelp]

My work on the First exercise.

2x - 6= 6x - 50
4x=44
x=11
but I am not sure how to solve the other

 

[mmm4444bot]

x=11

Looks good!

For a hint on the second exercise, check out this page:

Angles on a Straight Line Add to 180

Angles on one side of a straight line always add to 180 degrees

www.mathsisfun.com

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[ThankYouForYourHelp]

what u mean dont forget to
report units ?

 

[pka]

Your second problem evolves a linear pair . Read that link.

 

[mmm4444bot]

what u mean dont forget to report units ?

Please excuse me; I'd been thinking about a different exercise. Your answer is correct.

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[Merida]

3x - 15 + x = 180 ( linear pair )

 

[pka]

3x - 12 + x = 180 ( linear pair )

Yes indeed, well almost:
\(4x-12=180\\ 4x=192\\x=48\)

 

[Otis]

3x - 15 + x = 180 ( linear pair )

That's the correct set-up, Merida, but you've copied a number incorrectly. The 15 should be 12.

When two angles sum to 180º, we call those 'supplementary angles'. For example, if an angle is 80º, then the supplementary angle is 100º (and vice versa).

By the way, when two angles sum to 90º, we call those 'complementary angles'.

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