Give the step-by-step reasoning process and then the final answer. 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?
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Algebra:140(.40) = 56 problems. Linear:56 / 2 = 28 problems.
The final answer: 28.
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