mik còn chưa đc thi áp lực tinh thần dã man

TH1:                                TH2:

1/2x+3=2/5                       1/2x+3=-2/5     

1/2x=2/5-3                         1/2x=-2/5-3

1/2x=-13/5                          1/2x=-17/5

x=-13/5:1/2                           x=-17/5:1/2

x=-26/5                                  x=-34/5

vậy.....

6.Solar panels will be placed on the roofs of house to produce hot water and electricity.

7.Coal,oil,and gas won`t be anytime soon.

8.Will fossil fuels be come completely replaced by renwable energy in the future?

1.The electricity will be brought to remote areas next year.

2.The problem ò energy shortage will be solved by using sola energy .

3.A new hydropower will be built plant to meet in creasing demand.

4.In the coming decades,renewable energy will be used every day.

5.Will the world`s oil be used in the next 100 years?