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A = \(\dfrac{27}{512}\) \(\times\) \(\dfrac{327}{213}\) \(\times\) \(\dfrac{512}{57}\) \(\times\) \(\dfrac{213}{54}\) \(\times\) \(\dfrac{57}{327}\)
A = \(\dfrac{27\times327\times512\times213\times57}{54\times327\times512\times213\times57}\)
A = \(\dfrac{27}{54}\)
A = \(\dfrac{1}{2}\)
y x ( 233 + 327 ) = 327 x 99 + 99 x 233
y x ( 233 + 327 ) = 99 x ( 327 + 233 )
Suy ra y = 99
~ Chúc bạn hok tốt ~
Hướng dẫn giải:
364 234 298 746
813 815 682 686
435 872 510 231
327 486 327 486
556 329 556 400
89 880 80 888
53 x 4 x 3 x 25 = 53 x ( 4 x 25 ) x 3
= 53 x 100 x 3
= 15900
327 x 73 + 27 x 327 = 327 x ( 73 + 27 )
= 327 x 100
= 32700
Hok Tốt nhen
a) \(52\times4\times3\times25\)
\(=\left(52\times3\right)\times\left(4\times25\right)\)
\(=156\times100\)
\(=15600\)
b) \(327\times73+27\times327\)
\(=327\left(73+27\right)\)
\(=327\times100\)
\(=32700\)
\(2016\times105-2016\times4-2016\)
\(=2016\times\left(105-4-1\right)\)
\(=2016\times100\)
\(=201600\)
\(x\times24+x\times6=240\)
\(x\times\left(24+6\right)=240\)
\(x\times30=240\)
\(x=240:30\)
\(x=8\)
\(x-167\times15=167\times185\)
\(x-2505=30895\)
\(x=30895+2505\)
\(x=33400\)
\(173\times105+173\times96-173\)
\(=173\times\left(105+96-1\right)\)
\(=173\times200\)
\(=34600\)
1. 2016 x 105 - 2016 x 4 - 2016
= 211680 - 8064 - 2016
= 203616 - 2016
= 201600
2. X x 24 + X x 6 = 240
X x (24 + 6) = 240
X x 30 = 240
X = 240 : 30
X = 8
3. X - 167 x 15 = 167 x 185
X - 2505 = 30895
X = 30895 - 2505
X = 28390
4. 173 x 105 + 173 x 96 - 173
= 18165 + 16608 - 173
= 34773 - 173
= 34600
990
tick minh nha ban
\(900\)