Answer:
12.995
Step-by-step explanation:
32 students.
3 do none, so we can leave them out.
29 students.
18 + 16 = 34
34 - 29 = 5 students doing both subjects.
Isolate x. First, add 2/5 to both sides
x - 2/5 (+2/5) = 1/3 (+2/5)
x = 1/3 + 2/5
to simplify, find common denominators (15 in this case). Multiply the same number to both the denominator and numerator
(1/3)(5/5) = 5/15
(2/5)(3/3) = 6/15
x = 5/15 + 6/15
Simplify
x = 11/15
11/15 is your answer for x
hope this helps
D. combine like terms, 4+7 is 11 and -3 and -10 is -13
Answer: C. Subtraction Property of Inequality