Can anyone explain compile errors in this? : <pre><code>    byte b1=10,b2=20,b3;
    b3=b1+b2;
    b3=b1+1;
    b3=b1*2;
    short s1=10,s2=20,s3;
    s3=s1+s2;
    s3=s1+1;
    s3=s1*1;
    int x1=10,x2=20,x3;
    x3=x1+x2;
    x3=b1+b2;
    x3=b1+1;
    x3=b1*2;
    x3=s1+s2;
    x3=s1+1;
    x3=s1*1;
</code></pre>

<p>Help me in this question. Explain the complie errors in it...(im not asking about brackets)</p>
