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larisa [96]
2 years ago
8

Solve the equation: 3y + 20 = 3 + 2y

Mathematics
2 answers:
Anon25 [30]2 years ago
4 0

Answer:

y=-17

Step-by-step explanation:

3y+20=3+2y

Start by subtracting 20 from each side...

3y+20-20=3+2y-20\\3y=2y-17

Now, subtract "2y" from each side...

3y-2y=2y-2y-17\\y=-17

Next, let's substitute -17 for y in the original equation to check our answer...

3(-17)+20=3+2(-17)\\-51+20=3+(-34)\\-31=3-34\\-31=-31\rightarrow Correct!

Therefore the answer is:

y=-17

schepotkina [342]2 years ago
3 0

3y + 20 = 3 + 2y

1y + 20 = 3

y = -17

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Answer:

LMN has a larger area

Step-by-step explanation:

Given

RST

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Required

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Remove absolute signs

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For LMN, we have:

Area = \frac{1}{2}|x_1y_2 - x_2y_1 + x_2y_3 - x_3y_2 + x_3y_1 - x_1y_3|

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Remove absolute signs

Area = \frac{1}{2}*14

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