2x+y=9
x=12-3y
2(12-3y)+y=9
24-6y+y=9
24-5y=9
x=3
y=3
(3,3)
use the calculator.
700,000,000,000*7 = 4900000000000
2rock
thank you so much!
TYPO: THE LAST WORD IS "SALT"
Please ?