Two-Step Equations

Front

What is a two-step equation?

Back

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

Front

Solve for a: 15 = 2a + 7

Back

a = 4

Front

What is the first step to solve the equation 3c + 5 = 23?

Back

Subtract 5 from both sides to isolate the term with the variable.

Front

Solve for c: 3c + 5 = 23

Back

c = 6

Front

True or False: In the equation 4y - 9 = -36, y = -4 is correct.

Back

False; the correct value of y is -3.

Front

What is the purpose of writing an equation for a word problem?

Back

To translate a real-world situation into a mathematical expression that can be solved.

Front

Write an equation for: 331 students went on a field trip. Six buses were filled and 7 students traveled in cars.

Back

331 = 6x + 7

Front

Solve for x: -3x + 5 = -13

Back

x = 6

Front

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

Back

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

Front

What is the second step to solve the equation 2a + 7 = 15?

Back

Divide both sides by 2 after isolating the variable.