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Evaluate each expression.$$-2\left(\frac{15}{-5}\right)-\frac{6}{2}+9$$
$$0$$
Algebra
Chapter 1
An Introduction to Algebra
Section 7
Exponents and Order of Operations
The Language of Algebra
Equations and Inequalities
Functions
Linear Functions
Quadratic Functions
Polynomials
McMaster University
Harvey Mudd College
Idaho State University
Lectures
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Evaluate the expression.
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We're being asked to evaluate the given expression. So we're going to use the order of operations to help us. Well, if we know this far, first thing we notice is that we have a grouping. Simple. So we must evaluate within the grouping symbol first. Well, we have 15 divided by negative five, which is negative. Three. So we could have negative two times Negative. Three minus six. Divided by two plus nine. So now we've taken care of our grouping. Simple. So if you know this for operations, we have multiplication division, subtraction and addition. So we must first d'oh our multiplication and division from left to right. So we're going to start with negative two times Negative three, which is positive Six. So we're left with six minus six divided by two last night. Well, now we have to do the division. So we have six divided by two, which is equal to three. Sorry, love with six minus three plus nine. And now we're left with a subtraction and addition. So to do this, we must go from left to right. So first we must do six. Find this three, which is equal to three. So we're left with three plus nine and three plus sign is equal to 12. So what without
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