Question 1193443
<pre>
{{{matrix(1,7,

(matrix(10,1,Number,of,countries,in,which,Farsi,is,the,first,language)),
""+"",
(matrix(10,1,Number,of,countries,in,which,English,is,the,first,language)),
"",
""="",
"",
130)}}}

Let N = the number of countries in which Farsi is the first language.  Then,
N+78 = the number of countries in which English is the first language.

The equation is

{{{N}}}{{{""+""}}}{{{N+78}}}{{{""=""}}}{{{130}}}

You finish.

Edwin</pre>