22,3-22,9=-0,6
2-11,2=-9,2
0,6*9,2=-5,52
<span>10*(4.02/y-0.77)+4.3=10;
</span><span>10*(4.02/y-0.77)+4.3=10, y </span>≠0;
10*(201/50*1/y-77/100)+43/10=10;
10*(201/50y-77/100)+43/10=10;
201/5y-77/10+43/10=10;
201/5y-17/5=10;
201/5y=10+17/5;
201/5y=67/5;
1005=335y;
335y=1005;
y=3, y≠0;
y=3.