Hello

That is Correct!!Good job! By subtracting 4 from both sides of the equal sign you have found the solution for x.4 + x = 15-4 -4 x = 11

Click to ContinueSolving Subtraction Equations

In this example, x is the variable and the constant being subtracted from x is 120.What does x equal?-120 + 120 = 0

By adding 120 to both sides, the 120 on the left side of the equal sign cancels out.

The equation would look like this:X + 0 = 200Check your answer: Replace x with 200 in the equation.200 120 = 8080 = 80The equation is balanced, therefore x equals 200.Return to Main Menu

Solving One-Step EquationsJennifer Barrall9th Grade Algebra

Click to ContinueSolving Addition Equations

In this example, the variable is y and the constant being added to y is 14. What does y equal? Check your answer: Replace y with 6 in the equation.6 + 14 = 2020 = 20 The equation is balanced, therefore y equals 6. + 14 14 = 0

By subtracting 14 to both sides, the 14 on the left side of equal sign cancels out.

The equation would look like this: y + 0 = 6 Return to Main Menu

Solving Division Equations

In this example, the variable is k and the constant being divided by k is 2.What does k equal?Check your answer: Replace k with 32 in the equation.32 2 = 1616 = 16The equation is balanced, therefore k equals 32.Return to Main Menu

Solving Multiplication Equations

In this example, the variable is n and the constant being multiplied by n is 3.What does n equal?Check your answer: Replace n with 4 in the equation.3 4 = 1212 = 12The equation is balanced, therefore n equals 4.Return to Main MenuWhat is an Equation?Equation: A mathematical statement that says two things are equalAn equation is made up of two expressions, one on each side of the equal signOne-step equations contain one variable: a symbol for an unknown number (x, y, etc.)Numbers that we know are called Constants

The variable is n.The constants are 7 and 10.Return to Main Menu3Balancing EquationsEquations must be balancedWhen solving equations, the numbers on one side of the equal sign must be equal to the numbers on the other side of the equal signThe goal of solving equations is to get the variable (x) on one side of the equal sign

3 must be moved to the other side of the equal sign to get the variable, x, by itself.Return to Main Menu

Isolating XThe variable must be isolated on one side of the equal sign to solve the one-step equationFirst, identify what must be moved to get x by itselfThen, look for what operation is being used

The operation being used is subtraction. 9 must be moved to get x by itselfReturn to Main Menu