-4 = r/20 - 5 solve for the variable

Hey there! :)

r = 20.

Step-by-step explanation:

Given:

-4 = r/20 - 5

Begin by adding 5 to both sides:

-4 + 5 = r/20 - 5 + 5

1 = r/20

Multiply both sides by 20:

1 · 20 = r/20 · 20

r = 20.

homozygous. one is homozygous, while two is heterozygous.

  or  

step-by-step explanation:

if the four friends split the cost, p, of the pizza evenly, then each friend pays one-fourth of the cost of the pizza.

the expression is   or