Solving and Modeling One-Step Equation

After 4 students joined a class, the class has 32 students. Which equation can be used to find n, the number of students in the class before the new 4 students joined?

• $\frac{n}{4}\ =\ 32$

• n - 4 = 32

• 4n = 32

• n + 4 = 32

• F

• G

• H

• J

What value of x makes this equation true?

-90 = x - 100

Mathematical Equivalence

ON

What is the solution to the following equation?

Mathematical Equivalence

ON

Find the solution of the following equation.

• x = 5

• x = 3

• x = 7

• x = 10

Ted bought a dolphin poster for $12. He now has $5. Write and solve an equation to find out how much money Ted took to the aquarium.

• m - 12 = 5

• m - 5 = 12

• m + 5 = 12

• m + 12 = 5

Sergio got a paycheck for $74.80 for

10 hours of work. Which equation can be

used to find x, the amount he was paid

per hour?

• x + 10 = 74.80

• x − 80 = 74.80

• $\frac{x}{10}\ =\ 74.80$

• 10x = 74.80

Solve the following equation
X + 8 = 15

Mathematical Equivalence

ON

Solve the following equation 
8 = m - 12

Mathematical Equivalence

ON

Solve the following equation
2y = 18

Mathematical Equivalence

ON