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125+125-125+125x3=125+0+125x3=125+125x3=125x(1+3)=125x4=500
k nha bạn
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\(125\times2+125\times9-125\)
\(=125\times\left(2+9-1\right)\)
\(=125\times10\)
\(=1250\)
125 * 2 + 125 * 9 - 125
125 * ( 2 + 9 -1)
125 *10
1250
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a) 125.3+125.125.6
=125.3+125.750
=125.(3+750)
=125.753
=94125
b) (245.99+245)-(145.101-145)
=(245.(99+1))-(145.(101-1))
=245.100-145.100
=(245-145).100
=100.100
=10000
c) 154.(28+52)-45.(26+54)
=154.80-45.80
=(154-45).80
=109.80
=8720
a) 125x3+125+125x6
=125x(3+1+6)
=125x10
=1250
b) (245x99+245)-(145x101-145)
=(245x99+245)-(145x100)
=(245x100)-14500
=24500-14500
10000
c) 154x80-45x80
=80x(145-45)
=80x100
=8000
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a) x + 125 = 999
x = 999 - 125
x = 874
b) x- 125 = 999
x = 999 + 125
x = 1124
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