We need to solve two problems. Problem 1: $(-5) \cdot (+7) \cdot 2 = ?$ Problem 2: $+7 \cdot (-8) \cdot (-10) = ?$

ArithmeticInteger MultiplicationOrder of Operations
2025/4/1

1. Problem Description

We need to solve two problems.
Problem 1: (5)(+7)2=?(-5) \cdot (+7) \cdot 2 = ?
Problem 2: +7(8)(10)=?+7 \cdot (-8) \cdot (-10) = ?

2. Solution Steps

Problem 1:
We need to multiply 5-5, +7+7, and 22.
First, we multiply 5-5 and +7+7:
57=35-5 \cdot 7 = -35
Then, we multiply 35-35 by 22:
352=70-35 \cdot 2 = -70
Problem 2:
We need to multiply +7+7, 8-8, and 10-10.
First, we multiply +7+7 and 8-8:
7(8)=567 \cdot (-8) = -56
Then, we multiply 56-56 by 10-10:
56(10)=560-56 \cdot (-10) = 560

3. Final Answer

Problem 1: 70-70
Problem 2: 560560

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