I will read that as
[(a -b) -3] = [7 (a+b)]
then
a-b=7
a+b=-3
add them
2a = 4
a = 2
and then 2+b=-3
b = -5
For what values of a and b are the vectors
[ a − b
−3]
and
[7
a + b]
equal?
1 answer