How do i solve 7v-(2v-16)=5(v+4) explain if it is a one solution, no solution or infinite solution

What properties allow transformation to be used as a problem solving tool

Alana has 12.5 cups of flour with which she is baking four loaves of raisin bread and one large pretzel. the pretzel requires 2.5 cups of flour to make. how much flour is in each loaf of raisin bread? explain the steps to follow to get the answer.

If you could answer these your a life saver