Translating Equations with One Variable

Translate the sentence into an equation:
Four more than six times a number is 18.

• 10x = 18
• 4x + 6 = 18
• 4 + 6x = 18
• not enough info

Twice a number is 24.

• 2n = 24
• 2/n = 24
• 2 + n = 24
• 2 - n = 24

Translate the statement into an equation:
6 less than twice a number is 4

• 2n - 6 = 4
• 6 - 2n = 4

Translate the statement into an equation:
5 less than 3 times a number is 7

• 3n - 5 = 7
• 5 - 3n = 7

Translate the statement into an equation:
Seven less than a number is 3

• 7 - n = 3
• n - 7 = 3

Translate the statement into an equation:
10 more than twice a number is 18

• 2n + 10 = 18
• 10n + 2 = 18

5 less than a number is 15.

• x - 5 = 15
• 5 - x = 15
• 15 - x = 5

The product of 6 and a number plus 13 is 21.

• 6x + 13 = 21
• 21x + 6 = 13
• 6x + 21 = 13

5 less than a number is 15.

• x - 5 = 15
• 5 - x = 15
• 15 - x = 5

What is the difference between an expression and equation?

• Expressions have an equal sign and equations do not have an equal sign
• Expressions do not have an equal sign and equations do have an equal sign
• There is not a difference
• Expressions do not have variables and equations have variables