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Mathematics

2 answers:

Strike441 [17]3 years ago

6 0

Answer:

Step-by-step explanation:

If you write it out it will look like this, 2x+45+x=180

3x+45=180

-45 -45

3x=135

/3 /3

x=45

Deffense [45]3 years ago

3 0

Answer:

x=45

Step-by-step explanation:

<u>Straight angles/lines are equal to 180 degrees</u>. If you add the equations together to get 180 and simplify you'll find the answer. So, start out with the equation 2x+45+x=180.

1. Add like terms. 3x+45=180

2. Subtract 45 from both sides. 3x=135

3. Divide by 3 on both sides to get x by itself. x=45

4. Just to make sure, plug in 45 for x. 2(45)+45+45=180. Sure enough, it works!

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I’d say 21 and -1 :)
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