Question

tìm x 

a) 3-x =15-(-5)

b)-x-14+32=-26

c)x+(-31)-(-42)=-45

d)(-12)-(13-x)=-15-(-17)

Answer 1

a)-17

b)44

c)-56

d)27

nhớ tích cho mình nha

Answer 2

??????

Answer 3

a) 3-x=15-(-5)

3-x=15+5

3-x=20

x=3-20

x=-17

Vậy x=-17

b)-x-14+32=-26

-x-14=-26-32

-x-14=-58

-x=-58+14

x=44

Vậy x=44

c)x+(-31)-(-42)=-45

x-31+42=-45

x-31=-45-42

x-31=-87

x=-87+31

x=-56

Vậy x=-56

d)(-12)-(13-x)=-15-(-17)

(-12)-13+x=-15+17

x-26=2

x=2+26

x=28

Vậy x=28

Answer 4

Mình nhầm phần d)

d)(-12)-(13-x)=-15-(-17)

x-13-12=-15+17

x-25=2

x=2+25

x=27

Vậy x=27

Answer 5

a) 3 - x = 15 - (-5)

3 - x = 20

x = 3 - 20

x = -17

b) -x - 14 + 32 = -26

-x + 18 = -26

-x = -26 - 18

-x = -44

x = 44

c) x + (-31) - (-42) = -45

x + 11 = -45

x = -45 - 11

x = -56

d) (-12) - (13 - x) = -15 - (-17)

-12 - 13 + x = 2

-25 + x = 2

x = 2 + 25

x = 27