Solve the Expression: -7-(-5)+8.5+(-13) with Mixed Operations

−7−(−5)+8.5+(−13)=? -7-(-5)+8.5+(-13)=\text{?}

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Step-by-step video solution

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00:01 Given that there are only addition and subtraction operations - we must solve from left to right
00:04 A minus multiplied by a minus equals a plus
00:13 Whilst the addition of two minuses equals a minus

Step-by-step written solution

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1

Understand the problem

−7−(−5)+8.5+(−13)=? -7-(-5)+8.5+(-13)=\text{?}

2

Step-by-step solution

Let's begin by expanding the parentheses. Make sure to pay attention to the minus and plus signs, which change accordingly:

−(−5)=5 -(-5)=5

8.5+(−13)=8.5−13 8.5+(-13)=8.5-13

We should obtain the following:

−7+5+8.5−13= -7+5+8.5-13=

Now let's solve the exercise from left to right:

−2+8.5−13= -2+8.5-13=

6.5−13=−6.5 6.5-13=-6.5

3

Final Answer

−6.5 -6.5

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\( 8 + 3 \times 2 = \)

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