" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
2x - 5y = 18 | -3 | -6x + 15y = - 54 _
-19x + 0 = - 76
-19x = - 76
x = - 76 = 4
-19
5x - 3y = 26
5 X 4 - 3y = 26
20 - 3y = 26
- 3y = 26 - 20
-y = 6 = 2
3
-y = 2
y = -2
4x - 7y
= 4 X 4 - 7 X (-2)
= 16 - (-14)
= 16 + 14
= 30