(15,76-x)*6,2+12,47=84,39

Question

(15,76-x)*6,2+12,47=84,39

Answer 1

(15,76-x)*6,2+12,47=84,39
97,712-6,2*x=71.92
-6.2*x = -25.792
x = 4.16

Answer 2

(15,76-x)*6,2=84,39-12,47
(15,76-x)*6,2=71,92
15,76-x=71,92:6,2
15,76-x=11,6
x=15,76-11,6
x=4,16