Solving Multi-step Equations - Problem 1
In multi-step equations, start by simplifying both sides of the equations, as needed. This means to get rid of any parenthesis by distributing, combine any like terms, and so forth. When using the distributive property, it is very important to distribute the sign of the number as well. If there is a negative number outside of the parenthesis, make sure you are multiplying all the terms inside by a negative number. After the equation has been simplified, then use inverse operations to solve the for unknown variable. Remember that solving an equation and finding the value of the variable requires "undoing" what has been done to the variable. Since an equation is two expressions that are equal to each other, this means that what is done to one side of the equation has to be done to the other side as well so that the equation stays balanced. In a multi-step equation, work in the reverse order of PEMDAS.
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