what is ..
3 x(_ x 3)+(_x 4) and I cant seem to get the answer which is supposed to be 21.Please help.

Question

what is ..
3 x(_ x 3)+(_x 4) and I cant seem to get the answer which is supposed to be 21.Please help.

anonymous · Answer

are the blanks suppose to be the same number or different numbers?

anonymous · Answer

let us assume that the blanks are suppose to be the same number

let us denote the blanks as a variable "a"
also the multiplication sign will be "*"

rewriting the equation will look like 
3 ( 3 *a)+ (4*a) = 21

from here, just solve for a

anonymous · Answer

if the blanks are 2 different numbers, then there would be infinite solutions and we would denote the first blank as variable "x" and the second blank as variable "y"

anonymous · Answer

im not sure it just says fill in the blanks.

anonymous · Answer

what kind of math is this?

anonymous · Answer

I know its so weird. My friend just asked me it a second ago.

anonymous · Answer

its not weird

im just wondering because i dont want to explain it in a way you would not understand

anonymous · Answer

if the point is just filling in the blanks

try randomly puttting an number for the first blank and solving for the 2nd blank