Changing the subject when it appears twice Quiz: answer key
Every answer, with a link to its step-by-step solution
| # | Answer | Level | Solution |
|---|---|---|---|
| 1 | x = b/(a − c) | Easy | Solved step by step |
| 2 | x = −a3 − b | Easy | Solved step by step |
| 3 | x = −qp − r | Easy | Solved step by step |
| 4 | x = b − 4a − 1 | Easy | Solved step by step |
| 5 | x = rs + pqp − r | Medium | Solved step by step |
| 6 | x = b + 3aa − 4 | Medium | Solved step by step |
| 7 | x = y − 3y − 2 | Medium | Solved step by step |
| 8 | x = 2 + 3yy − 1 | Harder | Solved step by step |
| 9 | x = b + aca − 1 | Harder | Solved step by step |
| 10 | x = −1 − 2kk − 1 | Harder | Solved step by step |
Grade
Count your right answers and divide by the number of questions: A 90% or more, B 80%, C 70%, D 60%, F below 60%.