"If a = − 9 and b = − 6, show that (a−b) ≠ (b−a)."

(-9+6) is not equal to (-6+9)

-3 is not equal to 3

hence proved ✌

hope that helps ✌

Step-by-step explanation:

LHS  a - b = -9 - (-6) = -9 +6 = -3

RHS  b-a = -6 - (- 9) =  -6 +9 = 3

as LHS not equal to RHS

a-b not equal to b-a

Thus proven

the 1st digit is in the 100s n its 1

step-by-step explanation:

3,589÷18 = 199.389

so the first digit of the quotient is in the 100s n its 1