Solve the Equation: Finding the Missing Number in ? - 4.3 = 8.2

Fill in the missing value (?):

?−4.3=8.2 ?-4.3=8.2

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Step-by-step video solution

Watch the teacher solve the problem with clear explanations
00:00 Choose the correct answer
00:04 Let's write down each option and check
00:17 We'll use long subtraction for calculation
00:24 Let's calculate and substitute
00:47 We see that the first option doesn't fit, let's move to the second
00:54 Again we'll use the same method and check
01:06 Let's calculate and substitute
01:40 We see that the second option doesn't fit, let's move to the third
01:47 Again we'll use the same method and check
01:52 Let's calculate and substitute
02:29 We see that the third option fits, let's move to the fourth
02:37 Again we'll use the same method and check
02:44 Let's calculate and substitute
03:13 We see that the fourth option doesn't fit
03:21 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

Fill in the missing value (?):

?−4.3=8.2 ?-4.3=8.2

2

Step-by-step solution

To solve the equation ?−4.3=8.2 ? - 4.3 = 8.2 , we will isolate the variable ? ? .

  • Step 1: Add 4.3 to both sides of the equation to eliminate the subtraction from the left-hand side:

?−4.3+4.3=8.2+4.3?=12.5 \begin{aligned} ? - 4.3 + 4.3 &= 8.2 + 4.3 \\ ? &= 12.5 \end{aligned}

Therefore, the solution to the problem is 12.5\boxed{12.5}.

3

Final Answer

12.5

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