標題:
入來睇下識唔識先啦!!* ((20分))
發問:
1. (-5)+(-6)X(-2)= 2.(-52)-(+52)除(-4)= 3.(+7)-(+9)除(+3)= 4.(-13)X(+20)除(-5)= 5.(+27)-(-42)X(+3)= 6.(+10)+(-8)-(-7)-(-9)= 7(-12)X(-12)+(-11)X(-11)= 8.15X5-3X(2)-2-(1)= (這條答案好像是68 但我怎麼也計不出-___-") 要有計算過程*
最佳解答:
1)(-5)+(-6)X(-2) =(-5)+12 =7 2)(-52)-(+52)除(-4) =(-52)-(-13) =-39 3.(+7)-(+9)除(+3) =7-3 =4 4.(-13)X(+20)除(-5) =(-13)x(-4) =52 5.(+27)-(-42)X(+3) =27-(-126) =153 6.(+10)+(-8)-(-7)-(-9) =10-8+7+9 =18 7(-12)X(-12)+(-11)X(-11) =144+121 =265 8.15X5-3X(2)-2-(1) =75-6-2-1 =66 應該岩GA LA .. HOPE CAN HELP U ~
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其他解答:
1.(-5)+(-6)X(-2) =(-5)+12 =7 2.(-52)-(+52)除(-4) =(-52)-(-13) =39 3.(+7)-(+9)除(+3) =(+7)-(+3) =4. 4.(-13)X(+20)除(-5) =(-260)除(-5) =52 5.(+27)-(-42)X(+3) =(+27)-(-126) =(-99) 6.(+10)+(-8)-(-7)-(-9) =(+2)-(-7)-(-9) =(+9)-(-9) =18 7.(-12)X(-12)+(-11)X(-11) =(+144)+(+121) =265 8.15X5-3X(2)-2-(1) =75-6-2-1 =69-2-1 =67-1 =66 .|||||(1) (--5)+(+12) =(--5)+12 =+7 (2) (--52)--(--13) =(--52)+13 = --39 (3) (+7)--(+3) =(+7)--3 =+4 (4) (--260)除(--5) =+52 (5) (+27)--(--126) =(+27)+126 =+153 (6) (+10)--8+7+9 =+2+7+9 =+18 (7) (+144)+(+121) =+265 (8) 75--6--2--1 =+66|||||1. (-5)+(-6)X(-2) = (-5)+ 12 = 12 - 5 =7 2.(-52)-(+52)除(-4) =(-52) - (-13) =(-52) + 13 =-39 3.(+7)-(+9)除(+3) = 7 - 3 =4 4.(-13)X(+20)除(-5) = (-260) 除(-5) =51 5.(+27)-(-42)X(+3) = 27 - (-126) =153 6.(+10)+(-8)-(-7)-(-9) = 2 -(-7)-(-9) = 2 +7 +9 =18 7(-12)X(-12)+(-11)X(-11) = 144 + 121 =265 8.15X5-3X(2)-2-(1) = 75 - 6 -2 -1 =66 (
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