Solve for ?: Finding the Missing Value in 5×0 + 39×? = 39

Fill in the missing value (?):

5×0+39×?=39 5\times0+39\times?=39

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Step-by-step video solution

Watch the teacher solve the problem with clear explanations
00:00 Find the unknown
00:04 Always solve multiplication and division before addition and subtraction
00:09 0 multiplied by any number always equals 0
00:23 These unknowns don't match, let's continue to the next ones
00:29 Let's calculate
00:42 These unknowns don't match, let's continue to the next ones
00:55 Any number multiplied by 1 always equals itself
01:01 These unknowns match, let's continue to the next ones
01:10 Let's calculate
01:22 And this is the solution to the question

Step-by-step written solution

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1

Understand the problem

Fill in the missing value (?):

5×0+39×?=39 5\times0+39\times?=39

2

Step-by-step solution

To solve this problem, we'll follow these steps:

  • Step 1: Calculate 5×0 5 \times 0 .
  • Step 2: Substitute the result back into the equation.
  • Step 3: Simplify and solve for ? ? .

Now, let's work through each step:

Step 1: Calculate 5×0 5 \times 0 .
Using the property of multiplication where any number times zero is zero, we have:
5×0=0 5 \times 0 = 0 .

Step 2: Substitute the result back into the equation:
The equation now becomes 0+39×?=39 0 + 39 \times ? = 39 .

Step 3: Simplify and solve for ? ? :
This simplifies to 39×?=39 39 \times ? = 39 .
To isolate ? ? , divide both sides by 39:
?=3939=1 ? = \frac{39}{39} = 1 .

Therefore, the solution to the problem is 1 1 .

3

Final Answer

1

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\( 20:1= \)

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