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A) 2x + 3x + 1 = 5x+ 1
B) 2 + 3b - a - 2b = 2 +b -a
C) 3a - 2b + a - 3b + 5a = 9a -5b
D) 5x - 2xy + 4x - y + 3xy = 9x - y + xy
saludos
5x = -1
x = -1/5
x = -0.2
b) 2 + b -a = 0
2 + b = a
c) 9a - 5b
d) 9x -y +xy
x(9 +y) - y