Question

tìm x:

-2x-40=(5-x)-(-15+60)

Answer 1

-2x-40=(5-x)-(-15+60)

-2x-40=5-x+15-60

-2x+x=5+15-60+40

-x=0

=> x=0

các bạn cho mk vài li-ke cho tròn 230 với 

Answer 2

<=> -2x - 40 = 5-x +15-60

<=> -2x + x = 5+15-60+40

<=> -x=0 

=> x=0

Answer 3

-2x-40=(5-x)-(-15+60)

-2x-40=5-x-45

-2x-40=x-5-45

-2x-40=x-(-40)

x-2-40=x-(-40)

x-(-38)=x-(-40)

x-x=(-38)-(-40)

x-x=2

?????

mk tih hay that

Answer 4

-2x - 40 = (5 - x) - (-15 + 60)

-2x - 40 = 5 - x - 45

-2x - 40 = 5 - 45 - x

-2x - 40 + x = -40

-1x - 40 = - 40

-1x = - 40 + 40

-1x = 0

=> x = 0 

Answer 5

Lê Phương Thảo làm sai rùi

Answer 6

x=0

tick mk nhale khong bao minh

Answer 7

nhung ai gai ra loi giai nhanh nhat moi duoc 1 tick thoi