Question

tìm x

a.   70-5(x-3)=3³.5

b,   2^x-1=3^2016x-2016

Answer 1

70-5.(x-3)=3³.5

70-5.(x-3)=27.5

70-5.(x-3)=135

5.(x-3)=70-135

5.(x-3)=-65

x-3=-65:5

x-3=-13

x=-13+3

x=-10

b)2^x-1=3^2016x-2016

....

Answer 2

 

70-5.(x-3)=3³.5

70-5.(x-3)=27.5

70-5.(x-3)=135

5.(x-3)=70-135

5.(x-3)=-65

x-3=-65:5

x-3=-13

x=-13+3

x=-10

sorry nha câu b mình 0 bít