Bài 1:
a, (-21) + |-50| + (-29) -2016
=(-21)+50+(-29)-2016
=29+(-29)-2016
=0-2016
-2016
b,36: 3²+3²+2³-$15^{0}$
=36: 9+9+8-1
=4+8-1
=12-1
=11
c,($5^{103}$ -$5^{102}$ -$5^{101}$ ):($5^{99}$ .26 - $5^{99}$)
= ($5^{101}$.$5^{2}$ -5 -1 ) ): ($5^{99}$ .26 - $5^{99}$.1 )
=($5^{101}$ . 19) : [ 5^{99}$ .(26-1) ]
=($5^{101}$.19) : [ $5^{99}$ .25]
=$5^{101}$ .19 :$5^{101}$
=19
CHÚC BẠN HỌC TỐT!!!
