Resuelve por igualación: Resuelve por sustitución: X + y = 12 X + y = 24

X – y = 6 X – y = 10

hello from mrbilldoesmath!

answer:

x - 3

discussion:

x^2 - 9 = (x-3) (x+3)   so

(x^2-9)/ (x + 3) = x-3

you,

mrb

1.0

step-by-step explanation:

a variable is any characteristics, number, or quantity that can be measured or counted. a variable may also be called a data item. hope i !

the answer is 8/21

hope this