Tính
a) -(-5) – (+7) + (+3) +(-8)
b) -12 – (-9) – (+15) + (+14)
c) -|-10| – (-12)+ (-18) – (+3)
d) -(+15) + (-14) + |-12| – (-8)
đ) -|-3| – |+7| +|-2| – (-14)
Tính a) -(-5) – (+7) + (+3) +(-8) b) -12 – (-9) – (+15) + (+14) c) -|-10| – (-12)+ (-18) – (+3) d) -(+15) + (-14) + |-12| – (-8) đ) -|-3| – |+7| +|-2|
By Daisy
Đáp án:
Giải thích các bước giải:
a,
`-(-5)-(+7)+(+3)+(-8)`
`=5-7+3-8`
`=-7`
b,
`-12-(-9)-(+15)+(+14)`
`=-12+9-15+14`
`=-4
c,
`-|-10|-(-12)+(-18)-(+3)`
`=-10+12-8-3`
`=-23`
d,
`-(+15)+(-14)+|-12|-(-8)`
`=-15-14+12+8`
`=-9`
đ,
`-|-3|-|+7|+|-2|-(-14)`
`=-3-7+2+14`
`=6`
Đáp án:
`a) -(-5) – (+7) + (+3) +(-8)“
`= 5 – 7 + 3 – 8`
`= -2 + 3 – 8`
`= 1 – 8`
`= -7`
`b) -12 – (-9) – (+15) + (+14)`
`= -12 + 9 – 15 + 14`
`= -3 – 15 + 14`
`= -18 + 14`
`= -4`
`c) -|-10| – (-12)+ (-18) – (+3)`
`= -10 + 12 – 18 – 3`
`= -2 – 18 – 3`
`= -20 – 3`
`= -23`
`d) -(+15) + (-14) + |-12| – (-8)`
`= -15 -14 + 12 + 8`
`= -29 + 12 + 8`
`= -17 + 8`
`= -9`
`đ) -|-3| – |+7| +|-2| – (-14)`
`= -3 – 7 + 2 + 14`
`= -10 + 2 + 14`
`= -8 + 14`
`= 6`