Question

3 ( × - 4 ) - ( 1 - × ) = 13

Answer 1

3 ( x - 4 ) - ( 1 - x) = 13

3x - 12 - 1 + x = 13

3x + x = 13 + 13

4x = 26

x = 26/4:2

x = 13/2

Answer 2

3x-12-1+x=13

3x+x=13+12+1

4x=26

x=26/4

x=6,5