How do you solve ? 2(x−(3+2x)+9)=3x−8

Mathematics

1 answer:

PIT_PIT [208]3 years ago

6 0

Hey there!!

Given equation :

... 2 ( x - ( 3 + 2x ) + 9 ) = 3x - 8

Using the distributive property.

... 2 ( x - 3 - 2x + 9 ) = 3x - 8

... 2 ( -x + 6 ) = 3x - 8

Using the distributive property.

... -2x + 12 = 3x - 8

Subtracting 12 on both sides.

... -2x = 3x - 8 - 12

... -2x = 3x - 20

Subtracting 3x on both sides.

... -2x - 3x = -20

... -5x = -20

Dividing by -5 on both sides.

... x = -20 / -5

... x = 4

Hence, the answer is 4.

Hope my answer helps!

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What are the measurements of x and y

Anna71 [15]

X=21°
y=31.5°

Explanation:
Since it is a whole circle (360°) and there are 40 section (90° each).
2 of the 90° +(180°)are clearly stated there so you do:
360°-180°=180°

1. On the side that have 2 'y's you do:
90°-(12+15)=63
Then 63/2=31.5°
Therefore y=31.5°

2. On the side with 3 'x's you do:
90°-(12+15)=63
Then 63/3=21°
Therefore x=21°

To cross check you do:
90+90+15+12+21+21+21+15+12+31.5+31.5=360

I hope you find this helpful.

3 0

3 years ago

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