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<blockquote data-quote="Simba27" data-source="post: 120197" data-attributes="member: 182734">Just simple high-school algebra.Assume your phone number is 123 4567. This can be thought of as (123 x 10000) + 4567. Now let A=123 (first three digits) and B=4567 (last three digits) and write it up as an equation:( 250 x ((80 x A) + 1) + B + B - 250 ) / 2 = (A x 10000) + BMultiply both sides by 2:250 x ((80 x A) + 1) + B + B - 250 = (A x 20000) + (2 x <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite6" alt=":cool:" title="Cool&nbsp; &nbsp; :cool:" loading="lazy" data-shortname=":cool:" />Multiply out the brackets on the left hand side:(A x 20000) + 250 + (2 x <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite6" alt=":cool:" title="Cool&nbsp; &nbsp; :cool:" loading="lazy" data-shortname=":cool:" /> - 250 = (A x 20000) + (2 x <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite6" alt=":cool:" title="Cool&nbsp; &nbsp; :cool:" loading="lazy" data-shortname=":cool:" />Simplify again:(A x 20000) + (2 x <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite6" alt=":cool:" title="Cool&nbsp; &nbsp; :cool:" loading="lazy" data-shortname=":cool:" /> = (A x 20000) + (2 x <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite6" alt=":cool:" title="Cool&nbsp; &nbsp; :cool:" loading="lazy" data-shortname=":cool:" />Proving that this will work for any seven digit number.</blockquote>

[QUOTE="Simba27, post: 120197, member: 182734"] Just simple high-school algebra. Assume your phone number is 123 4567. This can be thought of as (123 x 10000) + 4567. Now let A=123 (first three digits) and B=4567 (last three digits) and write it up as an equation: ( 250 x ((80 x A) + 1) + B + B - 250 ) / 2 = (A x 10000) + B Multiply both sides by 2: 250 x ((80 x A) + 1) + B + B - 250 = (A x 20000) + (2 x B) Multiply out the brackets on the left hand side: (A x 20000) + 250 + (2 x B) - 250 = (A x 20000) + (2 x B) Simplify again: (A x 20000) + (2 x B) = (A x 20000) + (2 x B) Proving that this will work for any seven digit number. [/QUOTE]

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