Question 3046
THE SYSTEM OF EUATION MEANS THAT U HAVE TO SOLVE EACH VARIABLE ONE IN TERM OF OTHER...

Y=2X-7....EQ. 1

X=5-Y.....EQ. 2

NOW PLUG IN EQ. 1 IN TO 2

X=5-(2X-7)
X=5-2X+7
X=12-2X
3X=12
X=4....EQ. 3

PLUG IN EQ. 3 INTO EQ. 1
Y=2*3-7=-1

ANS: X=4
 AND Y=-1

Y=2(12-2X)-7