2 years ago

What is 19-3x=21+x and how do i show my work

2 answers:

6 0

19-3x=21+x
Add 3x to both sides.
19-3x+3x=21=x+3x
19=21+4x
Subtract 21 from both sides.
19-21=21+4x-21
-2=4x
Divide both sides by 4.
-1/2=x

Hope this hleped!

irga5000 [103]2 years ago

4 0

Subtract 19 from both sides
-3x=2+x

Subtract x from both sides
-4x=2

Divide both sides by -4
x=-1/2

Final answer: x=-1/2

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Simplify the rational expression. Find all numbers that must be excluded from the domain of the simplified rational expression.

kifflom [539]

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N= x²+4x+4 = (x+2)²
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8 0

2 years ago

Solve for the unknown angle measures of the polygon. The measures of 13 of the 14 angles of a 14−gon add up to 2,040°. What must

Jet001 [13]

Answer: The measure of fourteenth angle is 120°.

Step-by-step explanation:

Since we have given that

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Sum of measures of 13 angles = 2040°

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