Can someone help me with the questions in the description please? They Are Algebra Linear Equations

3x+5=26

10=-2x+4

-2(x+3)=20

4(x-2)=4x

17+2n=21+2n

2(x-3)+5=3(x-1)

-3(2n-5)=1/2(-12n+30)

3x+5=26
x=7

10=-2x+4
x=-3

-2(x+3)=20
x=-13

4(x-2)=4x
no solution for x

17+2n=21+2n
no solution for n

2(x-3)+5=3(x-1)
x=2

-3(2n-5)=1/2(-12n+30)
any number is a solution for n
(infinitely many solutions)