(10 points) I need help
-(x+1)+7=10

4x+7=2x-9

please show all work

What’s the range cuz i can’t find it?

Which angle of rotation is an angle of rotational symmetry for all figures?

Isabelle is mixing red and blue paint to make purple paint she adds 3/10 of a fluid ounce of red to 12/25 of a fluid ounce of blue to make 1 1/30 fluid ounces of purple how many fluid ounces of red paint ounces of red paint will she need to make 3 fluid ounces of purple paint