oblicz: 1. 7(x-5) + 2(-x+3) = 2. -(y+2) + 12y - 7(1+3) = 3. 32x - 5(x-7) - 13x = 4. -4(-5+y) - (x-5) =
oblicz:
1. 7(x-5) + 2(-x+3) =
2. -(y+2) + 12y - 7(1+3) =
3. 32x - 5(x-7) - 13x =
4. -4(-5+y) - (x-5) =
Odpowiedź
1. 7(x-5) + 2(-x+3) =7x-35-2x+6=5x-29 2. -(y+2) + 12y - 7(1+3) =-y-2+12y-7-21=11y-30 3. 32x - 5(x-7) - 13x =32x-5x+35-13x=14x+35 4. -4(-5+y) - (x-5) =20-4y -x+5=25-4y-x
1. 7(x-5) + 2(-x+3) 1.7x-35-2x+6=5x-29 2. -(y+2) + 12y - 7(1+3) 2.-y-2+12y-7-21=11y-30 3. 32x - 5(x-7) - 13x 3.32x-5x+35-13x=14x=35 4. -4(-5+y) - (x-5) 4.20-4y-x+5=25-4y-x ;}
1. 7(x-50)+2(x+3)=7x-35+2x+6=9x-29 2.-(y+2)+12y-7(1+3)=-y+2+12y-7-21=11y-30 3.32x-5(x-7)-13x=32x-5x-35-13x=14x-35 4.-4(-5+y)-(x-5)=20-4y-x+5=25-4y-x
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