If la-3l + lb-7l = 0, find the value of a + B + 2000

If la-3l + lb-7l = 0, find the value of a + B + 2000

la-3l+lb-7l=0
So A-3 = 0, B-7 = 0
a=3 b=7
a+b+2000
=3+7+2000
=2010