" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
11x - 13y + z - 10x + 13y + z
11x - 10x - 13y + 13y + z + z
= 1x + 2z
2. (3x + 2y) - (4x + y + 9z)
3x + 2y - 4x - y - 9z
3x - 4x + 2y - y - 9z
= -x + y - 9z
3. 3x + 4x - 2xy - 2x - x + 2xy
7x - 2x - x - 2xy + 2xy
= 4x