26 + (-30) = ? -26 + (-42) = ?
Understand the Problem
The question is asking to solve two mathematical expressions involving addition and negative numbers. The first expression is 26 + (-30) and the second is -26 + (-42). We need to find the results for both expressions.
Answer
The answers are: $26 + (-30) = -4$ and $-26 + (-42) = -68$.
Answer for screen readers
The results are:
- For the first expression: $26 + (-30) = -4$
- For the second expression: $-26 + (-42) = -68$
Steps to Solve
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Solve the first expression: 26 + (-30)
To solve the first expression, we add 26 and -30. Adding a negative number is like subtracting its absolute value. $$ 26 + (-30) = 26 - 30 $$ Now, calculate: $$ 26 - 30 = -4 $$ -
Solve the second expression: -26 + (-42)
For the second expression, we add -26 and -42. Adding two negative numbers results in a more negative number. $$ -26 + (-42) = -26 - 42 $$ Now, calculate: $$ -26 - 42 = -68 $$
The results are:
- For the first expression: $26 + (-30) = -4$
- For the second expression: $-26 + (-42) = -68$
More Information
In addition to assisting with negative numbers, this exercise reinforces the concept of addition as combining values. When adding negatives, the process mirrors subtraction, leading to a deeper understanding of integer operations.
Tips
- Confusing addition of two negative numbers; remember that it always results in a more negative number.
- Miscalculating the addition of negative and positive numbers; ensure to properly subtract the absolute value.
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