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3. Linear equations and inequalities
A linear equation in one variable is an equation in which there is only one variable present. It is of the form Ax + B = 0, where A and B are any two real numbers and x is an unknown variable that has only one solution. For example, 9x + 78 = 18 is a linear equation in one variable.
One-step equations: Linear equations and inequalities
Two-steps equations: Linear equations and inequalities
Multi-step equations: Linear equations and inequalities
One-step inequalities: Linear equations and inequalities
Two-step inequalities: Linear equations and inequalities
Multi-step inequalities: Linear equations and inequalities
Writing & solving proportions
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