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Answer :
Let's solve the problems step-by-step.
1. Calculate [tex]\(-6.42 + (-3.25)\)[/tex]:
- When we add two negative numbers, we can add their absolute values and then keep the negative sign.
- [tex]\(|-6.42| = 6.42\)[/tex] and [tex]\(|-3.25| = 3.25\)[/tex].
- Add the absolute values: [tex]\(6.42 + 3.25 = 9.67\)[/tex].
- Since both numbers are negative, the result is also negative: [tex]\(-9.67\)[/tex].
2. Calculate [tex]\(-4.7 + 38.5\)[/tex]:
- When adding a negative number to a positive number, we subtract the smaller absolute value from the larger one.
- [tex]\(|-4.7| = 4.7\)[/tex] and [tex]\(38.5\)[/tex] is already positive.
- Subtract: [tex]\(38.5 - 4.7 = 33.8\)[/tex].
- Since the positive number is larger, the result is positive: [tex]\(33.8\)[/tex].
The final results are:
- [tex]\(-6.42 + (-3.25) = -9.67\)[/tex]
- [tex]\(-4.7 + 38.5 = 33.8\)[/tex]
1. Calculate [tex]\(-6.42 + (-3.25)\)[/tex]:
- When we add two negative numbers, we can add their absolute values and then keep the negative sign.
- [tex]\(|-6.42| = 6.42\)[/tex] and [tex]\(|-3.25| = 3.25\)[/tex].
- Add the absolute values: [tex]\(6.42 + 3.25 = 9.67\)[/tex].
- Since both numbers are negative, the result is also negative: [tex]\(-9.67\)[/tex].
2. Calculate [tex]\(-4.7 + 38.5\)[/tex]:
- When adding a negative number to a positive number, we subtract the smaller absolute value from the larger one.
- [tex]\(|-4.7| = 4.7\)[/tex] and [tex]\(38.5\)[/tex] is already positive.
- Subtract: [tex]\(38.5 - 4.7 = 33.8\)[/tex].
- Since the positive number is larger, the result is positive: [tex]\(33.8\)[/tex].
The final results are:
- [tex]\(-6.42 + (-3.25) = -9.67\)[/tex]
- [tex]\(-4.7 + 38.5 = 33.8\)[/tex]
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