Solve the Equation: Finding the Missing Number in -8 + ? = 16-(-2)

−8+?=16−(−2) -8+?=16-(-2)

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Step-by-step video solution

Watch the teacher solve the problem with clear explanations
00:00 Find the unknown
00:08 Negative times negative always equals positive
00:11 Open parentheses
00:16 Calculate the operation
00:30 Isolate the unknown
00:51 Simplify what we can
01:06 And this is the solution to the question

Step-by-step written solution

Follow each step carefully to understand the complete solution
1

Understand the problem

−8+?=16−(−2) -8+?=16-(-2)

2

Step-by-step solution

Remember the rule:

−(−x)=+ -(-x)=+

Write the exercise in the appropriate form:

−8+?=16+2 -8+?=16+2

Solve:

−8+?=18 -8+?=18

Add 8 to both sides in order to zero out the left side:

−8+?+8=18+8 -8+?+8=18+8

−8+8=0 -8+8=0

Therefore:

0+?=26 0+?=26

?=26 ?=26

3

Final Answer

26 26

Practice Quiz

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a is negative number.

b is negative number.

What is the sum of a+b?

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