Pre-Algebra DeMYSTiFieD by Allan G. Bluman

Author:Allan G. Bluman
Language: eng
Format: epub
Publisher: McGraw-Hill Education
Published: 2011-04-14T04:00:00+00:00

Answers

2. x, x + 8

3. x, 31 − x

4. x, 3x + 7

5. x, 6x

Word Problems

Equations can be used to solve word problems in algebra.

After reading the problem:

• Step 1: Represent one of the unknown quantities as x and the other unknown using algebraic expressions in terms of x.

• Step 2: Write an equation using the unknown quantities.

• Step 3: Solve the equation for x and then find the other unknowns.

• Step 4: Check the answers.

EXAMPLE _____ _____ _____

One number is 12 more than another number. The sum of the two numbers is 88. Find the numbers.

SOLUTION _____ _____ _____

Step 1: Let x = the smaller number

Let x + 12 = the larger number

Step 2: x + x + 12 = 88

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