Find $ a+ b$ when: \[ 2009a + 2008b = 2007\]\[ 2008a + 2009b = 7002\]
Subtracct second equation from the first
a - b = - 4995 a = -4995 + b
2009 ( -4995+b) + 2008 b = 2007
2008 b + 2009 b = 10036962
b = 2498.621
then a = -2496.379
+36916 
