Question 1147889
Older brother, b
Younger brother, 35-b


{{{b-7=2(35-b-7)}}}

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{{{b-7=70-2b-14}}}

{{{3b=70-14+7}}}

{{{3b=63}}}

{{{b=21}}}-------age of younger brother


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{{{b-(35-b)}}}
{{{b-35+b}}}
{{{2b-35}}}
{{{42-35}}}
{{{7}}}------------------how many years apart they were born




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{{{(35-b)-b}}}{{{wrong}}}{{{expression}}}
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