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When solving algebra problems, it is important to follow a specific sequence to get the correct answer. This sequence is known as the 'Order of Operations'. To remember this sequence, you can use the acronym PEMDAS:
– Parentheses first
– Exponents (powers and roots)
– Multiplication and Division (from left to right)
– Addition and Subtraction (from left to right)
For example, in the exercise 2-(3-5), we start by simplifying the innermost expression inside the parentheses before applying subtraction. By adhering to the order of operations, you avoid mistakes and ensure that you solve the expression correctly.

Understanding negative numbers is crucial in algebra. Negative numbers are values less than zero and are denoted with a ‘-’ sign. When performing operations with negative numbers, you need to pay careful attention to their signs.
Some key points to remember include:
– Subtracting a negative number is the same as adding its positive value. For example, in the expression 2-(-2), we convert it to 2+2 because subtracting -2 is effectively adding 2.
– Adding two negative numbers results in a more negative number. For example, -3 + (-2) = -5.
– When multiplying or dividing, two negatives make a positive. For example, -2 * -3 = 6.
Practice working with negative numbers. They are fundamental to understanding algebraic expressions.

Simplifying expressions makes algebra easier to work with by reducing expressions to their simplest form. This involves performing all possible operations such as addition, subtraction, multiplication, and division. Let’s look at the steps for simplifying the expression in the given exercise:
In the expression 2-(3-5), follow these steps:
1. Simplify inside the parentheses: 3-5 results in -2.
2. Replace the simplified value: 2-(-2).
3. Subtracting a negative is the same as adding: 2+2, which equals 4.
Always ensure you follow the order of operations and correctly handle negative numbers when simplifying. Practicing these steps will help you become more confident in tackling algebra problems.