What if the answer to a first-year junior high equation is negative? Tips for checking with the original equation

In first-year junior high equations, students sometimes wonder, "Is this right?" when the answer has a minus sign. During ...

How did the imaginary number i = root(-1) come about? Why must it exist? Can we do without it?

Yes, those of us who studied mathematics and physics after high school are familiar with the values $${i = \sqrt{-1}}$$ and ...
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Solving Linear Equations with Rational Numbers Worksheet (with Solutions)

A worksheet on solving multistep equations involving rational numbers (including positive and negative decimals and fractions). There are 28 problems for students to practice solving different types ...
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Solving a one step equation by subtracting with a double negative

Learn how to solve a one step equation. An equation is a statement stating that two values are equal. A one step equation is an equation whose solution can be obtained by performing only one step of ...