Question

Из равенства 3а - 5b = а/ b+1 выразите а

Answer 1

3а-5b= a/(b+1)
3a(b+1) -5b(b+1)=a
3a(b+1)-a=5b(b+1)
a(3(b+1)-1)=5b^2+5b
a(3b+3-1)=5b^2+b
a(3b+2)=5b^2+5b
a=(5b^2+5b)/(3b+2)