When 12 is subtracted from 3 times a number, the result is 24. Find the number.

Solve. -15 + 3x = 18x+10

Amanda completed 14 problems on her math quiz so far. This is two-thirds of the total number of problems on the quiz. Write and solve a one-step equation to find the total number of problems on the quiz.

A new one-year membership at a gym costs $290. A registration fee of $50 is paid up front, and the rest is paid monthly. How much do new members pay each month? Define a variable first.

Elizabeth made 100 cookies this week. She baked 4 more than three times the total she made last week. How many cookies did she bake last week.

Hope has 45 cars on her used car lot. She adds 5 cars each week. Jake has 60 cars on his car lot and add 2 cars each weeks. Write an inequality to show how many weeks it will take so that Hope has at least as many cars as Jake.

A dance instructor orders 48 costumes for a dance recital. Each box contains 8 costumes. Write an equation to find the number of boxes that the dance instructor will receive.

Solve. x - 7 + 10x = 7x - 5

When solving the equation 4x + 1 = −11, what is the first step?

Solve.

Solve:

Solve.

Match the equation with the first step to solve it. 4 + 4n = −12