Answer:
13. 15
14. 3
Step-by-step explanation:
Translate words into an equation by taking apart sections. Then isolate the variable.
13. 27 is 12 more than a number x
"27" 27
"is" =
"12 more than a number x" x + 12
27 = x + 12
27 - 12 = x + 12 - 12 Subtract 12 from both sides. "x" will be isolated (alone).
15 = x Answer
x = 15 Writing variable on the left side is standrad
14. The difference of a number p and -9 is 12
"The difference of a number p and -9" |p - (-9)|
"is" =
"12" 12
|p - (-9)| = 12 Subtracting a negative number becomes adding
|p + 9| = 12
|p + 9 - 9| = 12 - 9 Subtract 9 from both sides
p = 3 The | | can be worked around, it just keeps "p" positive.
