Linear equations and inequalities

Solve 3x + 5 = 20.

• 1 x = 15
• 2 x = 5
• 3 x = 25/3
• 4 x = 8

Solve 2x - 7 = 9.

• 1 x = 1
• 2 x = 2
• 3 x = 16
• 4 x = 8

Solve x/4 = 7.

• 1 x = 28
• 2 x = 3
• 3 x = 11
• 4 x = 1.75

Solve the inequality 2x + 1 > 7.

• 1 x < 3
• 2 x > 4
• 3 x > 3
• 4 x > 6

When both sides of an inequality are multiplied by a negative number, the inequality sign:

• 1 Disappears
• 2 Becomes equal
• 3 Stays the same
• 4 Reverses

The sum of two consecutive numbers is 41. What is the smaller number?

• 1 22
• 2 21
• 3 19
• 4 20