Solving Equations

An equation is a mathematical statement that asserts the equality of two expressions, typically containing variables.

To solve an equation means to find the value(s) of the variable(s) that make the equation true.

Subtract 4 from both sides to isolate the term with the variable: $$6n = -30$$ .

Divide both sides by 6 to solve for n: $$n = -5$$ .

The formula is $$y = mx + b$$ , where m is the slope and b is the y-intercept.

The formula is $$y = 65x + 15$$ , where y is the total cost, x is the number of hours, and 15 is the flat fee.

Rearranging gives $$a = -18$$ .

It represents all numbers greater than -8, not including -8 itself.

Isolating the variable allows you to solve for its value, making it easier to understand the relationship in the equation.

A variable is a symbol, often a letter, that represents an unknown value in an equation or expression.