I'm doing statics a math class and i need to solve a = a+b÷2 for b

Is it true or false i’m trying to pass this test so i can leave school

Im gonna fail 7th grade selective breeding 1. creates offspring which are genetically identical to the parent 2. is the process of breeding only organisms with desirable traits 3. involves the removal of the nucleus of a cell 4. combines traits from organisms of different species

How is working backward similar to solving an equation?