Image:

Your browser's rendering:

$5+5+5+5+5$

Source Code:

    <math> 
      <mstyle fontweight='bold'> 
        <mrow> 
          <mn>5</mn> 
          <mo>+</mo> 
          <mn fontweight='bold'>5</mn> 
          <mo>+</mo> 
          <mn fontweight='normal'>5</mn> 
          <mo>+</mo> 
          <mn fontstyle='italic'>5</mn> 
          <mo>+</mo> 
          <mn fontfamily='Helvetica'>5</mn> 
        </mrow> 
      </mstyle> 
    </math>