Someone please help , in stuck on this one
 
											 
											Answer:
First option is the correct answer
[tex] b_1 = \frac{2A -b_2 \: h }{h} [/tex]
Step-by-step explanation:
[tex]b_1 = \frac{2A}{h} - b_2 \\ b_1 = \frac{2A -b_2 \: h }{h} \\ [/tex]