One-step equations add & subtract

Front

What is a one-step equation?

Back

A one-step equation is an equation that can be solved in one operation, either by adding, subtracting, multiplying, or dividing.

Front

How do you solve the equation t - 7 = 11?

Back

Add 7 to both sides: t - 7 + 7 = 11 + 7, so t = 18.

Front

What is the solution to the equation g - 56 = 12?

Back

Add 56 to both sides: g - 56 + 56 = 12 + 56, so g = 68.

Front

How do you solve a subtraction equation like a - 1.5 = 4.2?

Back

Add 1.5 to both sides: a - 1.5 + 1.5 = 4.2 + 1.5, so a = 5.7.

Front

What is the solution to the equation d - 10 = 8?

Back

Add 10 to both sides: d - 10 + 10 = 8 + 10, so d = 18.

Front

How do you solve the equation c - 4 = 8?

Back

Add 4 to both sides: c - 4 + 4 = 8 + 4, so c = 12.

Front

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

Back

Isolating the variable means to get the variable alone on one side of the equation to find its value.

Front

What is the first step in solving the equation x + 5 = 12?

Back

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

Front

What is the solution to the equation y - 3 = 9?

Back

Add 3 to both sides: y - 3 + 3 = 9 + 3, so y = 12.

Front

How do you check your solution for an equation?

Back

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