10-88-887+2436=
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c. TH1:/-8/=8
=8+(-2).3
=8-6=2
TH2:/-8/=8
=-8+(-2).3
=-8.(-6)
=-48
d.-887.(113+457)+113(887-457)
=-887.570+113.430
=-505590+48590
=-457000
e.(16+39)+(158-16-39)
=55+103
=158
c, \(\left|-8\right|+\left(-2\right).3\) => \(8+\left(-6\right)\) = \(2\)
d, \(-887.\left(113+457\right)+113.\left(887-457\right)\)
=> \(\left(-887\right).113+\left(-887\right).457+113.887-113.\left(457\right)\)
=> \(\left[\left(-887\right).113+113.887\right]+\left[\left(-887\right).457-113.457\right]\)
=> \(\left[113.\left(887-887\right)\right]+\left[457.\cdot\left(-113-887\right)\right]\)
=> \(\left[113.0\right]+\left(457.-1000\right)\)
=> \(0+-457000=-457000\)
e, \(\left(16+39\right)+\left(158-16-39\right)\)
=> \(\left(16+39+158-16-39\right)\)
=> \(\left(16-16\right)+\left(39-39\right)+158\)
=> \(0+0+158=158\)
\(2436:x=12\)
\(\Rightarrow x=2436:12\)
\(\Rightarrow x=203\)
^_^^_^^_^
(y + 2436) : 9 = 407
y + 2436 = 407. 9
y + 2436 = 3663
y = 3663 - 2436
y = 1227
vay y = 1227
\(2436\cdot\left(5\cdot x+103\right)=12\)
\(5\cdot x+103=2436:12=203\)
\(5\cdot x=203-103=100\)
\(x=100:5=20\)
\(2436.\left(5x+103\right)=12\)
\(5x+103=12:2436\)
\(5x+103=12:2436\)
\(5x+103=\frac{1}{2003}\)
\(5x=\frac{1}{2003}-103\)
\(5x=\frac{-206308}{2003}\)
\(x=\frac{-206308}{2003}.\frac{1}{5}\)
\(x=\frac{-206308}{10015}\)
2685 : 4 = 671 (dư 1)
1684 : 2 = 842
2436 : 6 = 406
2415 : 3 = 805
1471 nha!
10-88-887+2436=10-88=-78-887=-965+2436=1471