Question

найдите а/в если 2а+5в/5а+2в = 1

Answer 1

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