Sagot :
a. 5x+3x
=x(5+3)
=8x
b. 3x-8x
=x(3-8)
=-5x
c. -4x+15x
=x(-4+15)
=11x
d. -9x-6x
=x(-9-6)
=-15x
=x(5+3)
=8x
b. 3x-8x
=x(3-8)
=-5x
c. -4x+15x
=x(-4+15)
=11x
d. -9x-6x
=x(-9-6)
=-15x