What is the solution set to
91=-1+21+4

   i hope this helps!   :)

Step-by-step explanation:

given   91 = -1 + 21 + 4

lets combine like terms first   91 = -1 + 25

now add one to both sides   92 = 25

subtract 25 from both sides   67 = 0

there is no solution to this problem

135 is your answer

step-by-step explanation:

try 180 times three then divide that number by 4 (sides) to get your answer. im glad to : )

a28=58

step-by-step explanation:

a1=a1+(n-1)d

a28= 4+ (28-1)2

a28=4+(27)(2)

a28=4+54

a28=58