Question

USUŃ NAWIASY I WYKONAJ REDUKCJE WYRAZÓW PODOBNYCH;

a. 3(x+y)+2(4x-y)+(x-4y)

b. 2(a-7b)+(-2b-4b)+5(-a-b)+8(3b-2a)

c. 4(2x+3y)-2)y-5x)-(-2y-x)+(-6x+7y)

d. -(-2b+c-3)-4(b+3c-6)-3(2-c+b)

e. 12( 1/4t - 1/6w ) -24( 1/6t + 1/4w)

f. 4[(3x-2y)-(4x+3y)] - [(y-x)-2 (5x-4y)]

PROSZE O SZYBKA ODPOWIEDZ BO POTRZEBNE MI TO NA JUTROO...

DAAM NAAJ...

Answer 1

a) 3(x+y)+2(4x-y)+(x-4y)=3x+3y+8x-8y+x-4y=12x-9y

b) 2(a-7b)+(-2b-4b)+5(-a-b)+8(3b-2a)=2a-14b-2b-4b-5a-5b+24b-16a=-19a-b

c) 4(2x+3y)-2)y-5x)-(-2y-x)+(-6x+7y)=8x+12y-2y+10x+2y+x-6x+7y=13x+19y

d) -(-2b+c-3)-4(b+3c-6)-3(2-c+b)=2b-c+3-4b-12c+24-6+3c-3b=-5b-10c+21

e) 12( 1/4t - 1/6w ) -24( 1/6t + 1/4w)=3t-2w-4t-6w=-t-8w

f) 4[(3x-2y)-(4x+3y)] - [(y-x)-2 (5x-4y)]=4(3x-2y-4x-3y)-(y-x-10x+8y)=

=12x-8y-16x-12y-y+x+10x-8y=7x-29y

Answer 2

a) 3(x+y)+(2x-y)+(x-4y)=3x+3y+2x-y+x-4y=6x-2y

b)2(a-7b)+(2b-4b)+5(-a-b)+8(3b-2a)=2a-14b+2b-4b-5a-5b+24b-16a=-19a+3b

c)

4(2x+3y)-2(y-5x)-(-2y-x)+(-6x+7y)=8x+6y-2y-10x+2y+x-6x+7y=-7x+9y

d.  -(-2b+c-3)-4(b+3c-6)-3(2-c+b)=2b-c+3-4b-12c+24-6+3c-3b=-5b-10c+21

e. 12( 1/4t - 1/6w ) -24( 1/6t + 1/4w)=3t-2w-4t-6w=-t-8w

f.   4[(3x-2y)-(4x+3y)] - [(y-x)-2 (5x-4y)]=4(3x-2y-4x-3y)-y-x-10x+8y=12x-8y-16x-12y-y-x-10x+8y=-15x+11y