Odpowiedzi

2010-02-16T14:49:58+01:00
A]
6(x-4)-2=6x-24-2=6x-26
jeśli masz wyliczyć x, to:6x=26
x=26:6
x=4⅓
b]
2(x+1)-3(x-1)=2x+2-3x+3=-x+5
-x=-5
x=5
c]
-3(y-2)+4(y+2)=-3y+6+4y+8=y+14
y=-14
d]
5(x-y-1)-4(x+2)=5x-5y-5-4x-8=x-5y-13
e]
2(3a+b)-2(a-b)=6a+2b-2a+2b=4a+4b
3 5 3
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2010-02-16T14:51:50+01:00
A}6{x-4}-2=6x-24-2=6x-22
b}2(x+1)-3(x-1)=2x+2-3x+3=-x+5
c)-3(y-2)+4(y+2}=-3y+6+4y+8=y+14
d}5(x-y-1)-4(x+2)=5x-5y-5-4x-8=x-5y-13
e}2(3a+b)-2{a-b)=6a+2b-2a+2b=4a+4b