Find the Error. A student solved the equation 3(-4 + x) - 5x =7x + 15.find her mistake and correct it. the student says its 1. 3(-4 + x) - 5x = 7x + 15, 2. -12 + 3x - 15x = 7x + 15, 3. -12 - 12x = 7x + 15, 4. -12 - 12x +12x =7x + 12x + 15, 5. -12 = 19x + 15, 6. -12 - 15 = 19x + 15 - 15, 7. -27 = 19x. and the student says the answer is: x = -1,8/19

The figure shows triangle def and line segment bc, which is parallel to ef: triangle def has a point b on side de and point c on side df. the line bc is parallel to the line ef. part a: is triangle def similar to triangle dbc? explain using what you know about triangle similarity. part b: which line segment on triangle dbc corresponds to line segment ef? explain your answer. part c: which angle on triangle dbc corresponds to angle f? explain your answer. asap