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alexandr1967 [171]
2 years ago
8

Whats her errors and whats the soulution​

Mathematics
2 answers:
kondor19780726 [428]2 years ago
6 0

Answer:

she messed up at -17=34x

Step-by-step explanation:

she added 8x to each side but she was actually supposed to subtract

Harrizon [31]2 years ago
3 0

The error is 8(x - 3) + 7 = 2x(13) and -17 = 34x.

4 - 17 = -13, not 13

8x - 17 = 26x

-17 = 26x -8

-17 = 18x ( it should be like this, but this is still wrong because it should -26)

The solution is:

8(x - 3) + 7 = 2x(4 - 17)

8(x - 3) + 7 = 2x(-13)

8x - 24 + 7 = -26x

8x - 17 = -26x

8x + 26x = 17

34x = 17

x = 17/34

x = 1/2

Hope it helps!

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Answer:

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angle ABD and angle DBC are supplementary angles.

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angle BCD= 4x+45 = 4(20) +45

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Hence, angle ABD =55 degree

            angle BCD= 125 degree

<em>Hope this helps.</em>

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