Question 1054499
Jacob is 7 years older than twice Sarah's age.
<pre>
{{{matrix(1,7,

(matrix(2,1,"Jacob's", age)),
"",
""="",
"",
(matrix(4,1,2,times,"Sarah's", age)),
PLUS,

(matrix(2,1,7, "years.")) )}}}

J = 2S + 7

</pre>
...the sum of their ages is 61.
<pre>
{{{matrix(1,7,
(matrix(2,1,"Jacob's", age)),
""+"",
(matrix(2,1,"Sarah's", age)),
"",
""="",
"",
61 )}}}

J + S = 61

Solve this system by substitution.

{{{system(J=2S+7,J+S=61)}}}

If you need help doing that, ask me
in the thank-you note form below and
I'll get back to you by email.  No
charge ever! I do this for fun.

Edwin</pre>