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Va rog ajutati.ma

a) 8x-12x+16-9x--12x-6+2x-4x-20=
b) 15x-25x+30-20x-24x+28-3x+6x-6=
c) 6x-12x+15-12x+28x-36+8x-16x-24=
d)36x-8+21x+15-48x+18-35x+77=


Răspuns :

a) 8x-12x+16-9x-12x-6+2x-4x-20=-27x-10

b) 15x-25x+30-20x-24x+28-3x+6x-6=-51x+52

c) 6x-12x+15-12x+28x-36+8x-16x-24=2x-45

d)36x-8+21x+15-48x+18-35x+77=-26x+102