" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
-2x + 4y = 8 (×3)
-------------------- -
- 10y = -6
y = 0,6
-2x + 4y = 8
-2x + 4(0,6) = 8
-2x + 2,4 = 8
-2x =5,6
x = 5,6 / -2
x = - 2,8
maka nilai dari -x + 2y
-(-2,8) + 2(0,6)
= 2,8 + 1,2
= 4