To solve this expression, you need to
follow the order of operations, which is often remembered using the acronym
PEMDAS:
3. Multiplication and Division (from left to right)
4. Addition and Subtraction (from left to right)
1. Solve multiplication from left to right:
2. Substitute the result back into the expression:
3. Continue with subtraction and addition from left to right:
4. Finally,
the answer is −20+25= 5.
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