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Additional info for 501 Algebra Questions, 2nd edition

Sample text

4ᎏ = −12 2 94. ᎏ3ᎏa = 54 8 95. ᎏ5ᎏb = −56 42 Team-LRN 501 Algebra Questions 7 96. Jack paid \$21,000 for his new car. This was ᎏ8ᎏ the suggested selling price of the car. What was the suggested selling price of the car? 97. After putting 324 teddy bears into packing crates, there were 54 crates ﬁlled with bears. If each crate contained the same number of bears, how many bears were in each packing crate? 98. Only 2% of turtle hatchlings will live to become breeding adults. How many turtles must have been born if the current number of breeding adults is 1,200?

Evaluate the ﬁrst term. Signs the same? Multiply and give the result a positive sign. Evaluate the second term. Multiply from left to right. Substitute the results into the numerical expression. Yes, you can just subtract. The simpliﬁed value of the expression is as follows: 50. Substitute the values for the variables into the expression. PEMDAS: Evaluate the expression in the parentheses ﬁrst. Change subtraction to addition and the sign of the term that follows. Substitute the result into the numerical expression.

Change subtraction to addition and change the sign of the term that follows. 5 1 a + (0) = 4ᎏ2ᎏ 1 5 2 5 5 b + −ᎏ2ᎏ = −ᎏ3ᎏ 2 5 Subtract −ᎏ2ᎏ from both sides of the equation. b + −ᎏ2ᎏ − −ᎏ2ᎏ = −ᎏ3ᎏ − −ᎏ2ᎏ Associate like terms. Change subtraction to addition and change the sign of the term that follows. Apply the rules for operating with signed numbers. Change the improper fraction to a mixed number. b + (−ᎏ2ᎏ − −ᎏ2ᎏ) = −ᎏ3ᎏ − −ᎏ2ᎏ 45 Team-LRN 5 5 2 5 5 5 2 5 b + (−ᎏ2ᎏ + +ᎏ2ᎏ) = −ᎏ3ᎏ + +ᎏ2ᎏ 11 b + (0) = ᎏ6ᎏ 5 b = 1ᎏ6ᎏ 501 Algebra Questions 84.