Review for Unit 2 Flashcard 5: Writing and Solving Equations

Front

Solve for y: 3y + 1.25 = 2.75

Back

y = 0.5

Front

Alex has spent $10 and has $60 total. If sending a text costs $0.75, how many more texts can he send?

Back

66

Front

Sarah paid $4 for a game card and $6.25 for each game. If she spent $34.75 total, which equation represents the number of games y she played?

Back

6.25y + 4.00 = 34.75

Front

The perimeter of a hexagon is 18.6 yards. If one side is 3.7 yards, find the value of y for the other sides.

Back

y = 2.98

Front

Solve for x: 5x + 3x + 7 = 31. What is the value of x?

Back

x = 3

Front

What is an equation?

Back

An equation is a mathematical statement that asserts the equality of two expressions.

Front

Define perimeter.

Back

Perimeter is the total distance around a two-dimensional shape.

Front

What does it mean to solve an equation?

Back

To solve an equation means to find the value(s) of the variable(s) that make the equation true.

Front

What is a variable in mathematics?

Back

A variable is a symbol used to represent an unknown value.

Front

What is the first step in solving a linear equation?

Back

The first step is to isolate the variable on one side of the equation.