(2 8/100-у)*3 45/100=6 21/100

Question

(2 8/100-у)*3 45/100=6 21/100

Answer 1

(0.28-y)*3,45=6/21
0,97-3.45y=6.21
-3.45y=6.21-0.97
-3,45y=5,24
y=5.24/3.45
y=-1.52