b. 4524-(864-999)-(36+3999)
= 4524-864+999-36-3999
= 3660+999-36-3999
= 3660 +339+660-36-3999
=3999+660-36-3999
= (3999-3999)+(660-36)
= 0 + 624=624
a.-3752-(29-3632)-51
=-3752+(-29)+3632-51
=[(-3752)+3632]-(29+51)
=-120-80=-200
a, -3752-(29-3652)-51
=(-3752)+3652-(29+51)
=100-80
=20
b,4524-(864-999)-(36+3999)
=4524+(-864+999)+(-36-3999)
=4524+(-900)+(-3000)
=4524+(-3900)
=624
a. -3752-(29-3632)-51
= -3752-29+3632-51
= [(-3752)+3632]-29-51
= -120-29-51
= -120-(29+51)
= -120-80=-200
a) - 3752 - ( 29 - 3632 ) - 51
= - 3752 - 29 + 3632 - 51
= ( - 3752 + 3632 ) - ( 29 + 51)
= - 120 - 80
= - 200
b) 4524 - ( 864 - 999 ) - ( 36 + 3999)
= 4524 - 864 + 999 - 36 - 3999
= ( 4524 - 864 ) + ( 999 - 36 ) - 3999
= 3660 + 963 - 3999
= 4623 - 3999
= 624