No livro Pedro Alecrim eu gostava de saber onde mora o nicolau

substitute y = 2x - 4 to x + 2y = 12:

x + 2(2x - 4) = 12     use distributive property

x + (2)(2x) + () = 12

x + 4x - 8 = 12     add 8 to both sides

5x = 20     divide both sides by 5

x = 4

put the value of x to the first equation:

y = 2(4) - 4

y = 8 - 4

y = 4

antonyms of what word?

explanation:

greywater is gently used water from your bathroom sinks, showers, tubs, and washing machines. it is not water that has come into contact with feces, either from the toilet or from washing diapers. greywater may contain traces of dirt, food, grease, hair, and certain household cleaning products.