Q: Why is a scale used often when explainng how to solve equations?

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Tell me the equations first.

You need as many equations as you have variables.

You can solve the system of equations with three variables using the substitute method, or using matrix operations.

If you don't learn to solve equations then guess and check is the only way to arrive at new information.

Simultaneous equations are where you have multiple equations, often coupled with multiple variables. An example would be x+y=2, x-y=2. To solve for x and y, both equations would have to be used simultaneously.

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Not necessarily, but often it is simpler to convert fractions into decimals to solve the equation.

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Tell me the equations first.

There are people who use this web site that can and will solve equations.

You can use a graph to solve systems of equations by plotting the two equations to see where they intersect

Yes, that is often possible. It depends on the equation, of course - some equations have no solutions.

The answer depends on the nature of the equations.

You solve equations with fractions the same way you solve other equations. You perform various arithmetic operations on both sides of the equals sign until you get the result you want.

You need as many equations as you have variables.

One can solve equations of motion by graph by taking readings of the point of interception.

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.

Its harder to solve the equations with grande numbers