21.7(0.2y*0.61)+0.76y=1.2

Question

21.7(0.2y*0.61)+0.76y=1.2

Answer 1

21,7(0,2у*0,61)+0,76у=1,2
21,7*0,122у+0,76у=1,2
2,6474у+0,76у=1,2
3,4у=1,2
у=1,2:3,4
у=0,35
21,7*(0,2*0,35*0,61)+0,76*0,35=1,2
21,7*0,043+0,266=1,2
0,933+0,266=1,2
1,2=1,2