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Zadanie 23
Wykonaj działania.
[tex]a) \ a:(a-b)=\boxed{a-\frac{b}{a}} \\\\b) \ 2x-(x+4)=2x-x-4=\boxed{x-4}\\\\c) \ 7-(-x+6)=7+x-6=\boxed{x+1}\\\\d) \ -(x+4)+(x-5)=-x-4+x-5=\boxed{-9}\\\\e) \ 1-(t+p)-(t-2)=1-t-p-t+2=\boxed{-p-2t+3}\\\\f) \ -(-y+2)+(-2y-4)=y-2-2y-4=\boxed{-y-6}[/tex]
Zadanie 29
Wykonaj działania.
[tex]a) \ 6(x-4)-2=6x-24-2=\boxed{6x-26}\\\\b) \ 2(x+1)-3(x-1)=2x+2-3x+3=\boxed{-x+5}\\\\c) \ -3(y-2)+4(y+2)=-3y+6+4y+8=\boxed{y+14}\\\\d) \ 5(x-y-1)-4(x+2)=5x-5y-5-4x-8=\boxed{x-5y-13}\\\\e) \ 2(3a+b)-2(a-b)=6a+2b-2a+2b=\boxed{4a+4b}\\\\f) \ \frac{1}{2} (4x-4)-2x=2x-2-2x=\boxed{-2}\\\\g) \ x(x-1)-3(x^{2}-x)=x^{2}-x-3x^{2}+3x=\boxed{-2x^{2}+2x}\\\\h) \ 5a(a-3)-3a(a-5)=5a^{2}-15a-3a^{2}+15a=\boxed{2a^{2}}[/tex]
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