JAK OBLICZYĆ WYNIKI ZNAM a) 4c-(3c+2)-10c= 4c-3c-2-10c= b) 7x-8-(5x+6)= 7x-8-5x-6= c) 9y-(8-3y)+16.... Question from @slowik1122

November 2018 2 29 Report

JAK OBLICZYĆ WYNIKI ZNAM

a)
4c-(3c+2)-10c=
4c-3c-2-10c=

b)
7x-8-(5x+6)=
7x-8-5x-6=

c)
9y-(8-3y)+16=
9y-8+3y+16=

d)
5x-(2-4x)+8x-7=
5x-2+4x+8x-7=

e)
-(-5c-8)+6-9c-c=
5c+8+6-9c-c=

f)
-4(3x-6)-3(2+7x)=
-12x+24-6-21x=

g)
5(3z-7)-9(-8z-6)=
15z-35+72z+54=

h)
-3(5x-4)+8(-3x+2)=
-15x+12-24x+16=

i)
7x-3(5x+2)-6(7+2x)=
7x-15x-6-42-12x=

j)
-5(3y-7)-2(6+4y)+3y=
-15y+35-12-8y+3y=

Agikson $a)\\4c-(3c+2)-10c=\\=4c-3c-2-10c=c-2-10c=c-10c-2=-9c-2$
$b)\\7x-8-(5x+6)=\\=7x-8-5x-6= 7x-5x-8-6=2x-14$
$c)\\9y-(8-3y)+16=\\=9y-8+3y+16= 9y+3y-8+16=12y+8$
$d)\\5x-(2-4x)+8x-7=\\=5x-2+4x+8x-7=5x+4x+8x-2-7=17x-9$
$e)\\-(-5c-8)+6-9c-c=\\=5c+8+6-9c-c=5c-9c-c+8+6=-5c+14$
$f)\\-4(3x-6)-3(2+7x)=\\=-12x+24-6-21x=-12x-21x+24-6=-33x+18$
$g)\\5(3z-7)-9(-8z-6)=\\=15z-35+72z+54=15z+72z-35+54=87z+19$
$h)\\-3(5x-4)+8(-3x+2)=\\=-15x+12-24x+16= -15x-24x+12+16=-39x+28$
$i)\\7x-3(5x+2)-6(7+2x)=\\=7x-15x-6-42-12x= 7x-15x-12x-6-42=-20x-48$
$j)\\-5(3y-7)-2(6+4y)+3y=\\=-15y+35-12-8y+3y= -15y-8y+3y+35-12=-20y+23$

0 votes Thanks 1

Alexsandrixonka a)

$4c-(3c+2)-10c=4c-3c-2-10c=-9c-2$

b)

$7x-8-(5x+6)=7x-8-5x-6=2x-14$

c)

$9y-(8-3y)+16=9y-8+3y+16=12y+8$

d)

$5x-(2-4x)+8x-7=5x-2+4x+8x-7=17x-9$

e)

$-(-5c-8)+6-9c-c=5c+8+6-9c-c=-5c+14$

f)

$-4(3x-6)-3(2+7x)=-12x+24-6-21x=-33x+18$

g)

$5(3z-7)-9(-8z-6)=15z-35+72z+54=87z+19$

h)

$-3(5x-4)+8(-3x+2)=-15x+12-24x+16=-39x+28$

i)

$7x-3(5x+2)-6(7+2x)=7x-15x-6-42-12x=-20x-48$

j)
$-5(3y-7)-2(6+4y)+3y=-15y+35-12-8y+3y=-20y+23$

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