2 years ago

I need help!! thnaks

Mathematics

1 answer:

liraira [26]2 years ago

3 0

Answer:

7a + 2b

Step-by-step explanation:

Given

4a + 3b + 3a - b ← collect like terms

4a + 3a + 3b - b

= 7a + 2b

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Step-by-step explanation:

Please see the diagram for understanding of how the angles were derived,

Applying Alternate Angles, ABO =77 degrees

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Subtracting 12 from 77, we obtain the angle at B as 65 degrees.

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In the diagram, this is the line AC.

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