Question

4 [-2(8:4)+15(-3)-(-12)

3(25:5-14:2)-5(6:2)

[-15:(-3)]-3[2(5-9):3]

-16:(-4)[7-2(15:3)]

-7[8-3(14:7)-12:(-4)]-3(-2)

2[3-9:(-3)+2(5-7)]-18:(-9)

-16:(-8)+5[3-15:5+2] (-3+4)

Answer 1

    4.[-2(8:4) + 15(-3) - (-12)]

= 4.[-2.2 - 45 + 12]

= 4.[-4 - 45 + 12]

= 4.[-49 + 12]

= 4.[-37]

= - 148

 

Answer 2

    3.(25 : 5 - 14 : 2) - 5.(6:2)

= 3.(5 - 7) - 5.3

= 3.(-2) - 15

= - 6 - 15

= -21

 

Answer 3

   [-15:(-3)] - 3.[2.(5 - 9):3]

= 5 - 3.[(2.-4):3]

= 5 - 3.[-8:3]

= 5 + 24:3

= 5 + 8

= 13

Answer 4

-16 : (-4)[7 - 2.(15:3)]

= -16 : (-4).[7 - 2.5]

= -16:(-4).[7 - 10]

= -16:(-4).(-3)

= 4.(-3)

= -12 

Answer 5

    -7.[8 - 3(14 : 7) - 12:(-4)] - 3.(-2)

= -7.[8 - 3.2 + 3] + 6

=  -7.[8 - 6 + 3] + 6

= -7.[2 + 3] + 6

= - 7.[5] + 6

= - 35 + 6

= - 29 

Answer 6

    2.[3 - 9: (-3) + 2.(5 - 7)] - 12 : (-4) - 3(-2)

= 2.[3 + 3 + 2.(-2)] + 3 + 6

= 2.[3 + 3 - 4] + 3 + 6

= 2.[6 - 4]+ 3  +6

= 2.2 + 3 + 6

= 4  +3  +6

= 7 + 6

= 13 

 

Answer 7

   -16:(-8) + 5.(3 - 15:5 + 2].(-3 + 4)

= 2 + 5.(3 - 3 + 2).(1)

= 2 + 5.(0 + 2)

= 2 + 5.2

= 2 + 10

= 12