Expressions
Simplify: 3x + 5x
8x
Solve: x + 7 = 12
Solve: x - 4 > 5
x=10 or higher
You have $20 and spend $x. Write an expression for what you have left.
20-x
Evaluate 2x when x = 3
6
Simplify: 4+2x - 1
3+2x
Solve: 2x = 18
Solve: 2x ≤ 10
x=4 or lower
Write an equation: 3 times a number is 24
3x=24
Evaluate x² - 2x when x = 4
8
Simplify 6x + 9+ 3x + 9 + x
10x+18
Solve: 3x - 5 = 10
Solve: -3x > 9 (don’t forget to flip the sign!)
x=-4 or higher
Tom earns $8 per hour. He earned $56. How many hours did he work?
8x=56
Evaluate 3x + 2y when x = 1, y = 5
13
Simplify: 2x + 3 - 4x + 7
-2x+10
Solve: 4x + 2 = 2x + 10
x=4
Solve and graph: x + 3 ≤ 7
x= 3 or lower
Sarah’s age is 5 more than twice her brother’s. Write an expression.
2x+5
Evaluate (2x - y)² when x = 2, y = 1
9
Simplify: 2x + 3 - 4y + 7x + 8y - 23
9x+4y-20
Solve: 3x - 2 = 2x + 4
x=2
Solve: 5x - 1 ≥ 3x + 2
x=1 or higher
A number minus 4 is less than 9. Solve the inequality.
x-4<9
Evaluate: x³ - 2x² + x when x = 2
0