Question 355228
{{{ab+bc=ac}}}
Multiply both sides by 4.
{{{4ab+4bc=4ac}}}
Substitute,
{{{3ac+4bc=4ac}}}
{{{4bc=ac}}}
{{{highlight(bc=(1/4)ac)}}}
.
.
.
Given,
{{{4ab=3ac}}}
{{{highlight(ab=(3/4)ac)}}}
.
.
.
{{{bc/ab=((1/4)ac)/((3/4)ac)}}}
{{{highlight_green(bc/ab=1/3)}}}