x - 153 = 27
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`@` `\text {Ans}`
`\downarrow`
`a)`
\(x \times 27 + x \times 83 = 23400\)
`x \times (27 + 83) = 23400`
`x \times 110 = 23400`
`x = 23400 \div 110`
`x = 2340/11`
Vậy, `x = 2340/11`
`b)`
`x \times 153 - x \times 53 = 7600`
`x \times (153 - 53) = 7600`
`x \times 100 = 7600`
`x = 7600 \div 100`
`x = 76`
Vậy, `x = 76.`
a) x-73=(57-x)-467
<=>x+x=57+73-467
<=>2x=-337
<=>x=-337/2
vậy ....
b) -(x - 3 - 84) = 70 - (-27) - 115
<=> -x + 3 + 84 = 70 +27 - 115
<=>-x=-105
<=>x=105
vậy ...
c) 231 - x + 62 = 46 + (x - 21)
<=> - x = 46 + x - 21-231-62
<=>-2x=-268
<=> x=134
vậy ...
d) -18 + x = -63 - (-33)
<=>x=-63+33+18
<=>x=-12
vậy ...
e) (x - 153) - (48 - 193) = 1 - 2 - 3 - 4
<=>x - 153 - 48 +193 = 1 - 2 - 3 - 4
<=> x= 0
vậy ...
\(S=\left(15+17-19-21\right)+\left(23+25-27-29\right)+.....+\left(143+145-147-149\right)+151+153-155\\ =\left(-8\right)+\left(-8\right)+....+\left(-8\right)+149\\ =\left(-8\right).17+149=13\)
never gonna give you up
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desert you
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never gonna say goodbye
never gonna tell a lie
and hurt you :)
a: \(1968\cdot15+1968\cdot84+1968\)
\(=1968\left(15+84+1\right)\)
\(=1968\cdot100=196800\)
b: \(6412+5378+3582+4628\)
\(=\left(6412+4628\right)+\left(5378+3582\right)\)
\(=11040+8960=20000\)
c: \(178\cdot101-178\)
\(=178\cdot101-178\cdot1\)
\(=178\left(101-1\right)=178\cdot100=17800\)
d: \(153\cdot8+153+153\)
\(=153\left(8+1+1\right)\)
\(=153\cdot10=1530\)
x-153=27
x = 27+153
x = 180