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IN ABC, m<BAC =3x+9, m<ABC =8x+11, and m<BCA= 5x-8. Find the measures of <1,<2,<3. SHow your woek for solving x and finding each angle measure clearly.

IN ABC, m<BAC =3x+9, m<ABC =8x+11, and m<BCA= 5x-8. Find the measures of <1,<2,<3. SHow your woek for solving x and finding each angle measure clearly.
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1 answer

You know the three angles sum to 180, so

3x+9 + 8x+11 + 5x-8 = 180
16x + 12 = 180
...

Now you can find x, and thus the three angles.