Solve the Number Sequence: 21-3-6+9-5 Step by Step

21−3−6+9−5= 21-3-6+9-5=

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Step-by-step video solution

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00:00 Use the associative law and combine the subtraction terms into one term
00:11 Use the associative law again to cancel out two numbers from the exercise
00:21 We're left with a simple subtraction exercise
00:24 That's the solution!

Step-by-step written solution

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1

Understand the problem

21−3−6+9−5= 21-3-6+9-5=

2

Step-by-step solution

Due to the fact that the exercise only involves addition and subtraction operations, we will solve it from left to right:

21−3=18 21-3=18

18−6=12 18-6=12

12+9=21 12+9=21

21−5=16 21-5=16

3

Final Answer

16 16

Practice Quiz

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\( 8 - 2 + 6 = \)

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