2 Step Equations

Solve for a: 20 = 2 - a

• a = 16

• a = 18

• a = 20

• a = 22

If x + 4 = 10, what is x?

• x = 2

• x = 4

• x = 6

• x = 8

What is the second step in solving the equation 2x = 8?

• Add 8 to both sides to isolate x.

• Multiply both sides by 2 to solve for x.

• Divide both sides by 2 to solve for x.

• Subtract 2 from both sides to isolate x.

What does it mean to isolate a variable in an equation?

• To combine like terms on one side of the equation.

• To manipulate the equation so that the variable is on one side and all other terms are on the opposite side.

• To eliminate the variable from the equation entirely.

• To substitute the variable with a numerical value.

Solve for a: 15 = 2a + 7

• a = 2

• a = 3

• a = 4

• a = 5

How do you check if your solution to an equation is correct?

• Substitute the solution back into the original equation to see if both sides are equal.

• Multiply both sides of the equation by the same number.

• Add the same value to both sides of the equation.

• Graph the equation and see if the solution lies on the line.

Solve for x: 2(x - 3) = 10

• x = 5

• x = 6

• x = 7

• x = 8

What is a two-step equation?

• A two-step equation is an algebraic equation that requires two operations to solve for the variable. It typically involves addition or subtraction followed by multiplication or division.

• A two-step equation is an equation that can be solved in one step using only addition.

• A two-step equation is a type of equation that has only one variable and no constants.

• A two-step equation is an equation that requires three operations to solve for the variable.

Solve for x: 3x - 5 = 22

• x = 7

• x = 8

• x = 9

• x = 10

What is the purpose of using inverse operations in solving equations?

• To add complexity to the equation

• To undo the operations applied to the variable, allowing us to isolate it and find its value.

• To introduce new variables into the equation

• To make the equation more difficult to solve.