#1**+2 **

five times a number, subtracted from eighteen, is triple the number.

let the number be x

Five times the number is 5x

subtract this from 18 and you get 18-5x

This is equal to tripple the number tripple x is 3x

so

18-5x=3x

add 5x to both sides

18 = 8x

divide both sides by 8

18/8 = x

x = 9/4

x = 2.25

Melody
Sep 5, 2017