Question

Add:
a.7abc,-5abc,9abc,-8abc
b. 2x2y,-4x2y,6x2y,-5x2y
c. -9x,3x, and 5x ​

Answer 1

Answer:

Step-by-step explanation:

a. 7abc + (-5abc) +9abc +(-8abc)

  = abc ( 7-5+9-8) = abc (3) = 3abc

b. 2x² + (-4x²y) +6x²y + (-5x²y) = x²y (2-4+6-5)

 = x²y(-1) =( -x²y)

c. -9x + 3x + 5x = x (-9+3+5) = x(-1) = (-x)