Below is an instruction that describes a task. Write a response that appropriately completes the request in English. Please answer in English.

### Instruction:
Sadie has 140 math homework problems for the week. 40 percent are Algebra problems, and half of the Algebra problems are solving linear equations.  How many solving linear equations problems does Sadie have to solve?

### Response:
Algebra:140(.40)=56 problems
Linear: 56/2=<<56/2=28>>28 problems
#### 28