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Sagot :
Alright, let's simplify the expression [tex]\( 56.7 - 19.84 \)[/tex].
### Step-by-Step Solution:
1. Align the numbers based on their decimal points to ensure that we subtract corresponding digits correctly.
[tex]\[ \begin{array}{r} 56.70 \\ - 19.84 \\ \end{array} \][/tex]
2. Subtract the digits in the hundredths place:
[tex]\[ 0 - 4 \quad \text{which is not possible, we need to borrow.} \][/tex]
So, we need to borrow `1` from the tenths place. The `0` becomes `10` and `10 - 4 = 6`.
3. Subtract the digits in the tenths place:
[tex]\[ 6 - 8 \quad \text{which is also not possible without borrowing}. \][/tex]
So, we borrow `1` from the ones place of `56` (which then becomes `55`). The `6` becomes `16` and `16 - 8 = 8`.
4. Subtract the digits in the ones place:
[tex]\[ 5 - 9 \quad \text{again, borrowing is needed}. \][/tex]
We borrow `1` from the tens place of `55` (which then becomes `45`). The `5` becomes `15` and `15 - 9 = 6`.
5. Subtract the digits in the tens place:
[tex]\[ 4 - 1 = 3. \][/tex]
When we put it all together, we get:
[tex]\[ \begin{array}{r} 56.70 \\ - 19.84 \\ \hline 36.86 \\ \end{array} \][/tex]
So, the simplified result for [tex]\( 56.7 - 19.84 \)[/tex] is:
[tex]\[ \boxed{36.86} \][/tex]
### Step-by-Step Solution:
1. Align the numbers based on their decimal points to ensure that we subtract corresponding digits correctly.
[tex]\[ \begin{array}{r} 56.70 \\ - 19.84 \\ \end{array} \][/tex]
2. Subtract the digits in the hundredths place:
[tex]\[ 0 - 4 \quad \text{which is not possible, we need to borrow.} \][/tex]
So, we need to borrow `1` from the tenths place. The `0` becomes `10` and `10 - 4 = 6`.
3. Subtract the digits in the tenths place:
[tex]\[ 6 - 8 \quad \text{which is also not possible without borrowing}. \][/tex]
So, we borrow `1` from the ones place of `56` (which then becomes `55`). The `6` becomes `16` and `16 - 8 = 8`.
4. Subtract the digits in the ones place:
[tex]\[ 5 - 9 \quad \text{again, borrowing is needed}. \][/tex]
We borrow `1` from the tens place of `55` (which then becomes `45`). The `5` becomes `15` and `15 - 9 = 6`.
5. Subtract the digits in the tens place:
[tex]\[ 4 - 1 = 3. \][/tex]
When we put it all together, we get:
[tex]\[ \begin{array}{r} 56.70 \\ - 19.84 \\ \hline 36.86 \\ \end{array} \][/tex]
So, the simplified result for [tex]\( 56.7 - 19.84 \)[/tex] is:
[tex]\[ \boxed{36.86} \][/tex]
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