Answer:
3x
Step-by-step explanation:
[tex]3x[4 + 2 - (7 - 2)] \\ = 3x[6 - (5)] \\ = 3x[6 - 5] \\ = 3x[1] \\ = 3x[/tex]
3x[4+2-(7-2)]=
3x[6-(5)]=
3x[1]=
