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125 - ( -75 ) + 32 - ( 48 + 32 )
= 200 + 32 - 80
= 232 - 80
= 152
a)\(\left(-3\right).8.\left(-2\right).5=\left(-3\right).\left(-2\right).8.5\)
\(=6.40=240\)
b)\(127-18.\left(5+6\right)=127-18.11\)
\(=127-198=-71\)
c)\(125-\left(-75\right)+32-\left(48+32\right)=125+75+32-48-32\)
\(\left(125+75\right)+\left(32-32\right)-48=200-48=152\)
d)\(3.\left(-4\right).2+2.\left(-5\right)-20=-12.2+2.\left(-5\right)-20\)
\(=\left(-12-5\right).2-20=-17.2-20=-140-20=-160\)
Chúc bạn học tốt
125 - ( - 75) + 32 - ( 48 + 32)
= 125 - ( - 75) + 32 - 80
= 200 + 32 - 80
= 232 - 80
= 152
3 . ( -4)2 + 2 . ( -5) - 20
= 3 . 16 + ( -10 ) - 20
= 48 + ( -10 ) - 20
= 38 - 20
= 18
a)=125+75+32-48-32
=(125+75)+(32-32)-48
=200+0-48
=152
b)=3.16-10-20
=48-(10+20)
=48-30
=18
a) \(125-\left(-75\right)+32-\left(48+32\right)\)
\(=125+75+32-48-32\)
\(=200+\left(32-32\right)-48\)
\(=200+0-48\)
\(=200-48\)
\(=152\)
b) \(3.\left(-4\right)^2+2.\left(-5\right)-20\)
\(=3.16-10-20\)
\(=48-30\)
\(=18\)
c) \(-1685+\left(-2365\right)+569-1685\)
\(=\left(-1685-1685\right)-2365+569\)
\(=-3370-2365+569\)
\(=-5735+569\)
\(=-5166\)
a) -23.63 + 23.21-58.23
=-1449+483-1334
=-966-1334
=-2300
b) (-67).75 + 75.(-33)
=75.[-67+(-33)]
=75.(-100)
=-7500
c)(-5).8.(-2).3
=-40.(-6)
=240
d) (-163)+177+263-377
=[(-163) + 263] + (377-177)
=100+200
=300
e) (-2)^4.17+(-7).16
=-16.17+(-112)
=-272+(-112)
=-384
f) 125-(-75) + 32-(48+32)
=87 + 32-80
=87-80+32
=7+32
=39
a) 125-(-75)+32-(48+32) = 125 + 75 + 32 - 48 - 32 = 200 - 48 = 152
b) 47.347+347.(-47) = 347.( 14 - 47 ) = 347 . 0 = 0
c) x-10=-14
x = -14 +10
x = -4
d) 15 + x = 13
x = 13 - 15
x = -2
e) 25 . x = -75
x = -75/25
x = -3
g) 5x - 16 = -46
5x = -46 + 16
5x = - 30
x = -6
i) 3x - (-11) = -4
3x + 11 = -4
3x = -4 - 11
3x = -15
x = -5
hok tốt!!
dễ
=[125-(-75)]+[32-32]+48
=50+0+48
=98