" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
[ 5a+7 = 4b-2
[3=5a-2b
[9=4b-5a
*[5a-2b=3
[4b-5a=9
{5a-2b=3
{-5a+4b=9
----------------- +
2b =12 ||:2
b = 6
* 5a - 12 = 3 |+12
5a = 15 ||:5
a = 3
{a=3
{b=5.