Solve the Expression: 4×2-5+4 Using Order of Operations

4×2−5+4= 4\times2-5+4=

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Step-by-step video solution

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00:00 Solve
00:03 Always solve multiplication and division before addition and subtraction
00:08 Continue solving according to proper order of operations, from left to right
00:15 And this is the solution to the problem

Step-by-step written solution

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1

Understand the problem

4×2−5+4= 4\times2-5+4=

2

Step-by-step solution

According to the rules of the order of operations, we first solve the multiplication exercise:

4×2=8 4\times2=8

Now we obtain the exercise:

8−5+4= 8-5+4=

We solve the exercise from left to right:

8−5=3 8-5=3

3+4=7 3+4=7

3

Final Answer

7 7

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\( 100-(30-21)= \)

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