order of operations;
simplify
4.5-10-2(1-2)+5
thank you!
4.5-10-2(1-2)+5 =
4.5-10-2(-1)+5 =
4.5-10+2+5 = ?
To simplify the expression 4.5-10-2(1-2)+5, you need to follow the order of operations.
The order of operations is parentheses, exponents, multiplication/division (from left to right), and addition/subtraction (from left to right).
Let's break down the expression step by step:
1. Start with the parentheses: (1-2). The result is -1.
2. Next, deal with the multiplication: 2(-1). Multiply 2 by -1 to get -2.
3. Now, rewrite the expression with the simplified parts: 4.5 - 10 - (-2) + 5.
4. Subtract the negative number: 4.5 - 10 + 2 + 5.
5. Proceed with the addition/subtraction from left to right:
4.5 - 10 = -5.5
-5.5 + 2 = -3.5
-3.5 + 5 = 1.5
The simplified expression is 1.5.
So, 4.5 - 10 - 2(1-2) + 5 simplifies to 1.5.