Question

if 2(1,2)+x(2,5)=(8,19) what is the value of x

Answer 1

open up parenthesis.

(2,4)+(2x,5x)=(8,19)
(2+2x , 4+5x)=(8,19)
comparing

2+2x=8
=>2x=8-2
=>2x=6
=>x=3

or

4+5x=19
=>5x=19-4
=>5x=15
=>x=3

so x=3

Answer 2

thanks!