Oblicz: a]2 1/3( jedna trzecia) + 3 2/5(dwie piąte)= b]5-3 1/7= c]1 2/3 * 3 1/2= d]5:7= e]12:9= f]2:(-3)= g]2a + 3a= h]2a*3a= i]-5x-2x= j](-5x)*(-2x)= k]-2a + 5b+4a-3b= l]5a(do potęgi 2)-3a+1-2a(do potęgi 2)+7a+2= m]5+(3x-1)= n]5-(3x-1)= o]-5:(-3)= p]-35:(-7)= r]-14:5= s]6:11= t]9:(-4) u]-16:(-5)= w]3(x-1)= y]4(-2x+3y+1)=
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a]2 1/3( jedna trzecia) + 3 2/5(dwie piąte)=7/3+17/5=35/15+51/15=86/15=5 11/15
b]5-3 1/7=35/7-22/7= 13/7=1 6/7
c]1 2/3 * 3 1/2=5/3*7/2=35/6=5 5/6
d]5:7=5/7
e]12:9=12/9=4/3=1 1/3
f]2:(-3)=-2/3
g]2a + 3a=5a
h]2a*3a=6a²
i]-5x-2x=-7x
j](-5x)*(-2x)=10x²
k]-2a + 5b+4a-3b=2a+2b
l]5a²-3a+1-2a²+7a+2=3a²+4a+3
m]5+(3x-1)=5+3x-1=3x+4
n]5-(3x-1)=5-3x+1=-3x+6
o]-5:(-3)=5/3=1 2/3
p]-35:(-7)=35/7=5
r]-14:5=-14/5=-2 4/5
s]6:11=6/11
t]9:(-4)=-9/4=-2 1/4
u]-16:(-5)=16/5=3 1/5
w]3(x-1)=3x-3
y]4(-2x+3y+1)=-8x+12y+4
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