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

Solve 5x = 35.

• 1 x = 7
• 2 x = 40
• 3 x = 30
• 4 x = 175

Solve x + 9 = 15.

• 1 x = 9
• 2 x = -6
• 3 x = 24
• 4 x = 6

The solution of 2(x - 1) = 8 is:

• 1 x = 5
• 2 x = 4
• 3 x = 9
• 4 x = 3

Solve the inequality x - 3 < 2.

• 1 x < 5
• 2 x < -1
• 3 x > 5
• 4 x > -1