Question

75-(5х+х) умножить на 3=39

Answer 1

75-(5х+х)*3=39

75-18х=39

-18х=39-75

-18х=-36

х=-36:(-18)

х=2 

Answer 2

75-(5х+х)·3 = 39;
75-18х = 39;
-18х = -36;
х = 2.