Question

If * is an operation such that for any two
integers a and b,
a*b = a-(-b) +(-3), find the value of
(a) (-3)*2
(b) 2 *(-3)
(c)(-4) (-5)
(d) (-5) *(-4)
Is a*b = b* a?​

Answer 1

Answer:

a).....(-3)*2=(-3)-(-2)+(-3)

= -3+2-3

(-3)*2=-4. _________(i)

b).....2*(-3)=2-[-(-3)]+(-3)

= 2-3-3

2*(-3)=-4. _________(ii)

c).....(-4)*(-5)=(-4)-[-(-5)]+(-3)

=-4-5-3

(-4)*(-5)=-12. __________(iii)

d).....(-5)*(-4)=(-5)-[-(-4)]+(-3)

= -5-4-3

(-5)*(-4)=-12. ___________(iv)

Step-by-step explanation:

from the results (i),(ii),(iii) and (iv)....

yes,there is a*b=b*a....!!