One-Step Equations and Inverse Operations

Key Questions

How do inverse operations help solve equations?

They are helpful for solving with respect to a variable: if after some step you find yourself in a situation such as $\cos(x)=0.7$ , if you want to find the value of $x$ for which this statement is true, you need to apply the inverse cosine function at both sides and obtain $x=\cos^{-1}(0.7)$

KillerBunny · 2 · Jan 21 2015
How do you check solutions when solving one step equations?

Answer:

Substitute the solution for the variable in the equation and see if both sides of the equation are equal.

Explanation:

For example:

$x+9=12$

Subtract $9$ from both sides.

$x=12-9$

$x=3$

Now check by substituting $3$ for $x$ into the equation and solve.

$3+9=12$

$12=12$ Check!

Meave60 · 1 · Jul 5 2018
What are One-Step Equations?

A one-step equation is an equation that requires only one step to arrive at its solution.

I hope that this was helpful.

Wataru · 1 · Nov 9 2014