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Why is a scale used often when explaining how to solve equations?
Wiki User
∙ 9y ago
The basic idea is that you need to carry out the same operations on both sides of an equation.
In a scale, assuming you want to keep it balanced, if you add 3 kg. on the left side, you also need to add 3 kg. on the right side.
With an equation, the situation is similar; except that you can not only add and take away (add and subtract), but also (with certain limitations and caveats which you should learn) multiply both sides by the same number or term, divide both sides, square, take square roots, take trigonometric and inverse trigonometric functions, etc.
Wiki User
∙ 9y ago
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7
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Equations can be tricky, and solving two step equations is an important step beyond solving equations in one step. Solving two-step equations will help introduce students to solving equations in multiple steps, a skill necessary in Algebra I and II. To solve these types of equations, we use additive and multiplicative inverses to isolate and solve for the variable. Solving Two Step Equations Involving Fractions This video explains how to solve two step equations involving fractions.
