2/5+m=5/6 step by step explanation

13/30

Step-by-step explanation:

Begin by getting 2/5 on the right side.

2/5-2/5 + m = 5/6 - 2/5

The lowest common denominator is 6 * 5 which are prime to each other.

m = 5/6 - 2/5                          Multiply the tops and bottoms to make the bottoms 30

m = 5*5/(6*5) - (2*6)/(5*6)

m = (25 - 12)/30

m = 13/30

answear:

a

step-by-step explanation: a

since your problem is x^4 = 81, what you have to undeo is the "to the fourth power" part.

the inverse (opposite operation) of "to the fourth power" is "to the fourth root".

  (x^4) ^ ¼   = 81 ^ ¼  

  81 = 3^4     so (3 ^ 4) ^ ¼   =   3 ^ 1   = 3

by hand: (3 ^ 4) ^ ¼   =   3 ^ (4 x ¼) = 3 ^ 1   = 3   (when you take a power to a power, multiply the exponents.)

or, do it by calculator. one way of finding the fourth root is to use ^ (1/4)

step-by-step explanation: