Choose the correct solution to the equation:
5a+7=3a+7+2a
a. no solution
b. infinitely many solutions
c. none of the above
7b+4=7b-3
a. no solution
b. infinitely many solutions
c. none of the above
2c-5=8c+7
a. no solution
b. infinitely many solutions
c. none of the above
5d+35=5(d+7)
a. no solution
b. infinitely many solutions
c. none of the above

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