One-step Equations (addition/subtraction)

A one-step equation is an algebraic equation that can be solved in a single step, typically involving addition or subtraction to isolate the variable.

Subtract 18 from both sides: S = 24 - 18, so S = 6.

Add 15 to both sides: g = 30 + 15, so g = 45.

m + 6 = 10.

Subtract 7 from both sides: x = 12 - 7, so x = 5.

Add 33 to both sides: y = 147 + 33, so y = 180.

Isolating a variable means to manipulate the equation so that the variable is on one side by itself, making it easier to solve.

Add 4 to both sides: x = 10 + 4, so x = 14.

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

Subtract 5 from both sides: z = 12 - 5, so z = 7.