The sum of two numbers is fifteen. One number is three less than the other. Determine the system of equations.

let, one number be x

then, other number be x-3

X+X-3=15

or, 2X=15+3

or,2X=18

or,X=18÷2

or,X=9

one number =9

then another number=X-3=9-3=6

i dont understand the question? ?

step-by-step explanation:

35x 3= 105

step-by-step explanation:

35+35= 70   70 + 35= 105