B. If 2a = b+3/ b-1 and a = 3 , find b
answer is 1.8
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Answer:
9/5 = 1.8
Step-by-step explanation:
[tex]2a=\frac{b+3}{b-1} \\\\2a(b-1)=b+3\\\\2(3)(b-1)=b+3\\\\6(b-1)=b+3\\\\6b-6=b+3\\\\6b-b=3+6\\\\5b=9\\\\b=\frac{9}{5} \\\\b=1.8[/tex]