A = ((1/2)h)(b1 + b2) Distributivity: A = hb1/2 +

**hb2**/2 Multiply both sides by 2: 2A = hb1 +**hb2**Bring...1 Answers · Education & Reference · 20/06/2013

...by 2 to remove the fraction 2A=h(b1+b2) multiply left side by h 2A=hb1+

**hb2**divide hb1 and 2A by h 2A/h=b1+**hb2**subtract**hb2**from both sides...10 Answers · Education & Reference · 06/11/2008

Yes, you can use it... the HB 2 is the key.... that is telling you the hardness of the graphite and a #2 =

**HB2**. Good luck on your test!!!!6 Answers · Education & Reference · 01/11/2006

... = h(b1 + b2) Expand the brackets: 2A = hb1 +

**hb2**Subtract**hb2**from each side: 2A -**hb2**= hb1 Divide by h...1 Answers · Education & Reference · 20/01/2010