126+162+216+261+612+621

=(126+162)+(216+261)+(612+621)

=288+477+1233

=1998

126+162+216+261+612+621

=1998

hjfnjevb

vbj,bvje

TL:

126 + 162 + 216 + 261 + 612 + 621

= ( 126 + 162 ) + ( 216 + 261 ) + ( 612 + 621 )

= 288 + 477 + 1233

= 1998

~HT~

126 : 3 + 231 : 3 + 543 : 3

= ( 126 + 231 + 543 ) : 3

= 900 : 3

= 300

126 : 3 + 231 : 3 + 543 : 3

= \(126.\frac{1}{3}+231.\frac{1}{3}+543.\frac{1}{3}\)

=\(\frac{1}{3}\left(126+231+543\right)=\frac{1}{3}.900=300\)

126 : 3 + 231 : 3 + 543 : 3

= ( 126 + 231 + 543 ) : 3

= 900 : 3 = 300

P/s : Hình thức câu mới à Bonking ( -_- )

0,36 x 550 + 0,09 : 0,25 x 126 + 3 x 324 x 0,12
= 0,36 x 550 + 0,36 x 126 + 0,36 x 324
= 0,36 x ( 550 + 126 + 324 )
= 0,36 x 1000
= 360

A=\(\frac{3}{9.6}+\frac{5}{2.7.9}+\frac{7}{6.7.7}+\frac{8}{3.7.29}\) = \(\frac{1}{18}+\frac{5}{7.18}+\frac{1}{6.7}+\frac{8}{3.7.29}\)

= \(\frac{7+5}{7.18}+\frac{1}{6.7}+\frac{8}{3.7.29}\)=\(\frac{2}{7.3}+\frac{1}{6.7}+\frac{8}{3.7.29}\)= \(\frac{1}{3.7}.\)(\(\frac{2}{1}+\frac{1}{2}+\frac{8}{29}\))=

=\(\frac{1}{21}.\)(\(\frac{116+29+16}{58}\))=\(\frac{1}{21}.\frac{161}{58}=\frac{161}{1218}\)

a) = (360 + 126 + 123) : 3 = 203

b) = (436 + 164 - 200) : 4 = 100

c) = (525 + 120 - 145) : 5 = 100

M=3/10+4/45+5/126+6

bấm máy 

ra nghiêm sau

M=\(\frac{25}{54}\)

a) 23,5 x 34 + 45 x 23,5 + 3 x 23,5 x 7

= 23,5 x (34 + 45 + 3 x 7)

= 23,5 x (34 + 45 + 21)

=23,5 x 100

= 235.

b) 126 x 56 + 252 x 0,5 x 35 + 42 x 3 x 9

= 42 x 3 x 56 + 126 x 35 + 42 x 3 x 9

= 42 x 168 + 42 x 3 x 35 + 42 x 3 x 9

= 42 x 168 + 42 x 105 + 42 x 27

= 42 x (168 + 105 + 27)

= 42 x 300

= 12600

tick mình nha!

a) 23,5 x 34 + 45 x 23,5 + 3 x 23,5 x 7

= 23,5 x (34 + 45 + 3 x 7)

= 23,5 x (34 + 45 + 21)

=23,5 x 100

= 235.

b) 126 x 56 + 252 x 0,5 x 35 + 42 x 3 x 9

= 42 x 3 x 56 + 126 x 35 + 42 x 3 x 9

= 42 x 168 + 42 x 3 x 35 + 42 x 3 x 9

= 42 x 168 + 42 x 105 + 42 x 27

= 42 x (168 + 105 + 27)

= 42 x 300

= 12600

\(\frac{2006\times125+1000}{126\times2006-1006}=\frac{2006\times125+1000}{\left(125+1\right)\times2006-1006}=\frac{2006\times125+1000}{2006\times125+2006\times1-1006}\)

\(=\frac{2006\times125+1000}{2006\times125+1000}=1\)

\(\frac{2006.125+1000}{126.2006-1006}=\frac{2006.125+1000}{\left(125+1\right).2006-1006}=\frac{2006.125+1000}{125.2006+1.2006-1006}=\frac{2006.125+1000}{125.2006+1000}=1\)

\(\frac{2006\times125+1000}{126\times2006-1006}=\frac{2006\times125+1000}{2006\times125+2006-1006}=\frac{2006\times125+1000}{2006\times125+1000}=1\)