Math Word Problems Demystified - A Self Teaching Guide
If a DVD player originally sold for $80 and was reduced 30% for a sale, what was the reduced price? (a) $24 (b) $240 (c) $56 (d ...
If a person travels a distance of 840 miles in 12 hours, find the rate. UseR¼DT. (a) 50 miles per hour (b) 40 miles per hour (c ...
REFRESHER IV Equations Analgebraic expression consists of variables (letters), numbers, operation signs (þ, ,,), and grouping ...
EXAMPLE:Solve forx:x 7 ¼ 9 SOLUTION: x 7 ¼ 9 x 7 þ 7 ¼ 9 þ 7 add 7 to both sides x¼ 16 EXAMPLE:Solve forx:xþ 8 ¼ 10 SOLUTION: ...
Try These Solve each equation forx: xþ 18 ¼ 40 x 22 ¼ 10 5x¼ 45 xþ 6 ¼ 16 x 3 ¼ 8 SOLUTIONS: 1 : xþ 18 ¼ 40 xþ 18 18 ¼ 40 ...
More complex equations require several steps to solve them. The goal is to use addition and/or subtraction to get the variables ...
5 x 6 ¼ 3 xþ 14 5 ð 10 Þ 6 ¼ 3 ð 10 Þþ 14 50 6 ¼ 30 þ 14 44 ¼ 44 Try These Solve each equation forx: 7xþ 3 ¼ 31 2x 14 ¼ 16 ...
3 : 12 x 10 ¼ 8 xþ 26 12 x 10 þ 10 ¼ 8 xþ 26 þ 10 12 x 8 x¼ 8 x 8 xþ 36 4 x¼ 36 41 x 41 ¼ 36 4 x¼ 9 4 : 6 xþ 5 ¼ 3 xþ 32 6 x ...
parentheses. For example, 3 ðxþ 2 Þ¼ 3 xþ 3 2 ¼ 3 xþ 6 5 ð 2 x 8 Þ¼ 5 2 x 5 8 ¼ 10 x 40 When you solve an equation, re ...
Try These 3(x6)þ 10 ¼ 16 7(2x5)¼ 7 xþ 7 5(3x10)¼ 25 3(x8)¼2(xþ5) 4(3xþ2)¼ 10 x 14 SOLUTIONS: 1 : 3 ðx 6 Þþ 10 ¼ 16 3 x ...
3 : 5 ð 3 x 10 Þ¼ 25 15 x 50 ¼ 25 15 x 50 þ 50 ¼ 25 þ 50 15 x¼ 75 151 x 151 ¼ 75 15 x¼ 5 4 : 3 ðx 8 Þ¼ 2 ðxþ 5 Þ 3 x 24 ¼ 2 ...
Sometimes when you are solving word problems, you will need to solve an equation containing fractions. It should be noted that f ...
SOLUTION: 1 6 þ 1 3 ¼ 1 x the LCD is 6x 61 x 1 1 61 þ 62 x 1 1 31 ¼ 6 x^1 1 1 x^1 clear fractions xþ 2 x¼ 6 combine terms ...
SOLUTIONS: 1 : x 2 þ x 3 þ x 4 ¼ 26 126 1 x 21 þ 124 1 x 31 þ 123 1 x 41 ¼ 26 12 6 xþ 4 xþ 3 x¼ 312 131 x 131 ¼ 312 13 x ...
3 : 1 5 þ 1 6 ¼ 1 x 306 x 1 1 51 þ 305 x 1 1 61 ¼ 30 x^1 1 x^1 6 xþ 5 x¼ 30 11 x¼ 30 111 x 111 ¼ 30 11 x¼ 30 11 ¼ 2 8 11 4 ...
8 LESSON Algebraic Representation When you solve an algebra word problem, you must first be able to trans- late the conditions o ...
Subtractioncan be denoted by less than subtracted from decreased by exceeds shorter than difference between Multiplicationcan be ...
Try These Write each in symbols: Six times a numberxdecreased by four. A numberxincreased by six. Eight less than a numberx. Fi ...
One number is four times another number. One number is 6 more than twice the other number. One number is 4 less than one-half a ...
SOLUTIONS: 7þ 4 x¼ 31 2x 5 ¼ 15 3.^12 xþ 8 ¼ 19 2xþ1.20¼1.80 xþ 2 x¼ 30 Finally, it is necessary to be able to write an equat ...
«
1
2
3
4
5
6
7
8
9
10
»
Free download pdf