Question

log2 7x-3=4 alguem sabbe resolver

Answer 1

Log2 7x-3=4 2^4=7x-3 16=7x-3 19=7x X=19/7 :)

Answer 2

log      7x - 3 =   4
       2

                  4
7x - 3 =  2

7x - 3 = 16
7x = 16 + 3
7x = 19
x =  19
       -----
        7