\(a,2015\times3+2015\times6+2015\)
\(=2015\times\left(3+6+1\right)\)
\(=2015\times10=20150\)
\(\left(1200:75\right)-3600:225+6789\)
\(=16-\left(3600:225\right)+6789\)
\(=16-16+6789=6789\)
a) 2015 x 3 + 2015 x 6 + 2015 = 6789
b) 1200 : 75 - 3600 : 225 + 6789 = 20150
Hk tốt..........................
a. 2015 x 3 + 2015 x 6 + 2015
= 2015 x 3 + 2015 x 6 + 2015 x 1
= 2015 x ( 3 + 6 + 1 )
= 2015 x 10
= 20150
b. 1200 : 75 - 3600 : 225 + 6789
= ( 1200 : 75 ) - 3600 : 225 + 6789
= 16 - ( 3600 : 225 ) + 6789
= 16 - 16 + 6789
= 6789
a) 2015 x 3 + 2015 x 6 + 2015
= 2015 x 3 + 2015 x 6 + 2015 x 1
= 2015 x ( 3 + 6 + 1 )
= 2015 x 10
= 20150
b) 120 : 75 - 3600 : 225 + 6789
= 16 - 16 + 6789
= 0 + 6789
= 6789
a, 2015 x 3 + 2015 x 6 + 2015
= 2015 x 3 + 2015 x 6 + 2015 x 1
= 2015 x (3 + 6 + 1)
= 2015 x 10
= 20150
b, 1200 : 75 - 3600 : 225 + 6789
= 16 - 16 + 6789
= 0 + 6789
= 6789
a) 2015 x 3 + 2015 x 6 + 2015 =(2015 x 3) + (2015 x 6) +2015
= 6045 + 12090 + 2015 = 21650
b) 1200 : 75 - 3600 : 225 + 6789 = (1200:75) - (3600 : 225) + 6789
= 16 - 16 = 0 + 6789 = 6789
