Question 547140
(ab) is the number
given:
{{{a+b=10}}}
{{{a=highlight(1+2b)}}}
.

{{{highlight(1+2b)+b=10}}} substitution
{{{1+3b=10}}} add like terms and subtract 1
{{{3b=9}}}divide by 3
{{{b=3}}}
{{{a=7}}}
{{{highlight(73)}}}