Adding and Subtracting Rational Expressions

This video tutorial covers the conversion of phrases into numerical expressions, equations, and inequalities. It introduces keywords for operations like addition, subtraction, multiplication, and division, and explains turnaround phrases that require reversing the order of numbers. The tutorial includes practice problems with solutions and discusses inequality symbols, providing examples for better understanding.

What does the word 'sum' indicate in a mathematical phrase?

• Addition

• Multiplication

• Division

• Subtraction

What does 'decreased by' suggest in a mathematical expression?

• Multiplication

• Subtraction

• Addition

• Division

If a phrase states 'a number increased by 5', how should it be written?

• x + 5

• 5 - x

• x / 5

• 5 / x

If a phrase includes 'the product of', what operation does it imply?

• Subtraction

• Multiplication

• Division

• Addition

If 'the quotient of a number and 5' is part of a phrase, how is it represented?

• x - 5

• 5 / x

• x + 5

• x / 5

How should '12 less than a number' be written as an expression?

• x + 12

• 12 - x

• x - 12

• 12 + x

What does 'twice a number' translate to in an algebraic expression?

• 2 + x

• x / 2

• 2x

• x - 2

What does 'the sum of a number and 7 is 36' translate to in equation form?

• x - 7 = 36

• 7 - x = 36

• 7 / x = 36

• x + 7 = 36

How is 'a number is less than -10' represented using inequality symbols?

• -10 > x

• -10 < x

• x > -10

• x < -10

What does 'a number is at least 10' mean in terms of inequality?

• x < 10

• x <= 10

• x >= 10

• x > 10