Question

10+2.x=4⁵:4³

60-3(x-2)=51

4x-20=2⁵:2³

Answer 1

10+2.x=4⁵:4³

=> 10+2.x=4²

=> 2.x=4²-10

=>2.x=6

=> x=3

 

60-3.(x-2)=51

=>3.(x-2)=60-51

=>3.(x-2)=9

=>x-2=3

=>x=5

 

4.x-20=2⁵:2³

=> 4.x-20=2²

=>4.x=2²+20

=>4.x=24

=>x=6

Answer 2

\(10+2.x=4^5:4^3\\ 10+2.x=4^2\\ 10+2.x=16\\ 2.x=16-10\\ 2.x=6\\ x=6:2\\ x=3\)

 

\(60-3\left(x-2\right)=51\\ 3\left(x-2\right)=60-51\\ 3\left(x-2\right)=9\\ x-2=9:3\\ x-2=3\\ x=3+2\\ x=5\)

 

\(4x-20=2^5:2^3\\ 4x-20=2^2\\ 4x-20=4\\ 4x=4+20\\ 4x=24\\ x=24:4\\ x=6\)