Question

1: (-8) (+3)+(15)=(+3)
2: [-8+(4)(-3)]:(-1-1)
3: (-6-2+3):{-3(-2+3)+8]
4: -20:{-6+[(-2)(-3):(+2)]-2}
5: 10-{-6+{(-12):(-3)-8]}
6: (-5)²:(-4-1

mim ajuda por favor !

Answer 1

1: (-8) (+3)+(15)= -24+15 ==> - 9

2: [-8+(4)(-3)]:(-1-1) ==> [-8-12]:(-2)==> [-20]:(-2) ==>+ 10 

3: (-6-2+3):{-3(-2+3)+8] ==>(-5):{-3(+1)+8}==> (-5):{-3+8}= (-5):{+5} ==> - 1

4: -20:{-6+[(-2)(-3):(+2)]-2}=>-20:{-6+[(+6):(+2)]-2}
    -20:{-6+{+3]-2} ==> -20:{-6+3-2} ==> -20:{-5} ==> + 4
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5: 10-{-6+{(-12):(-3)-8]} ==> 10-{-6+4-8}==> 10-{-10}==> 10+10 ==> 20
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6: (-5)²:(-4-1) = 25 : (-5) ==> - 5  

Answer 2

1: (-8) (+3)+(15)= -24+15 ==> - 9

2: [-8+(4)(-3)]:(-1-1) ==> [-8-12]:(-2)==> [-20]:(-2) ==>+ 10  

3: (-6-2+3):{-3(-2+3)+8] ==>(-5):{-3(+1)+8}==> (-5):{-3+8}= (-5):{+5} ==> - 1

4: -20:{-6+[(-2)(-3):(+2)]-2}=>-20:{-6+[(+6):(+2)]-2}

   -20:{-6+{+3]-2} ==> -20:{-6+3-2} ==> -20:{-5} ==> + 4

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5: 10-{-6+{(-12):(-3)-8]} ==> 10-{-6+4-8}==> 10-{-10}==> 10+10 ==> 20

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6: (-5)²:(-4-1) = 25 : (-5) ==> - 5