Six people are standing in line for concert tickets the average age of 27 the average age of the first four people in line 23 the average age of the last three people is 34 how old is the fourth person in line

5=812a+9+3

step 1: simplify both sides of the equation.

5=812a+9+3

5=(812a)+(9+3)(combine like terms)

5=812a+12

5=812a+12

step 2: flip the equation.

812a+12=5

step 3: subtract 12 from both sides.

812a+12−12=5−12

812a=−7

step 4: divide both sides by 812.

812a /812 = -7/812

a= -1/116

so the answer is

a=   -1/116

16 is the absolute value

step-by-step explanation:

answer: it is a.,b.,d.

step-by-step explanation:

df =

both have same length