" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2025 KUDO.TIPS - All rights reserved.
b) 3x -4y+7+2x+4y-7=5x
c) 9x-6x+2y+5=3x+2y+5
d) -5a-6b+1-a+7b-9=-6a+b-8