Question

15(x-4)-2(x+3)-3(x+8)=0

Answer 1

15(x-4)-2(x-3)-3(x+8)=0

=>15x-60-2x+6-3x-24=0

=>20x=78

=>x=78/20

=>x=3.9

Answer 2

15(x-4)-2(x+3)-3(x+8)=0
=15x-15*4 - 2x+(-2*3) - 3x+(-3*8)=0
=15x-60 - 2x+(-6) - 3x+(-24)=0
=15x-60 - 2x-6 - 3x-24=0
=15x-2x-3x-60-6-24=0
=13x-3x-66-24=0
=10x-90=0
=10x=0+90
=10x=90
=x=90/10

x=9