Odpowiedź:
zadanie 1
a) 6x+3
6*7+3 = 42+3=45
b) 5y+10
5*(-4)+10 = -20+10=-10
c) 7(9-n)
7(9-0)=63-7=56
d) 6-10p
6-10*1/5=6-2=4
Zadanie 2
x=8
8-2=6
x=5,5
5,5-2=3,5
x=-2
-2-2=-4
Zadanie 3
Prawda
Fałsz
Zadanie 4
a) 3x+4
3*(-3)+4=-9+4=5
b) -8-2y
-8-2*4=-8-8=-16
c) 2x+3y-6
2*(-4)+3*3-6=-8+9-6=-5
d)
d) \frac{1}{5} a(a-3)
5
1
a(a−3)
\frac{1}{5} a(a-3)=\frac{1}{5} *15(15-3)=\frac{1}{5} *225-45=45-45=0
a(a−3)=
∗15(15−3)=
∗225−45=45−45=0
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Odpowiedź:
zadanie 1
a) 6x+3
6*7+3 = 42+3=45
b) 5y+10
5*(-4)+10 = -20+10=-10
c) 7(9-n)
7(9-0)=63-7=56
d) 6-10p
6-10*1/5=6-2=4
Zadanie 2
x=8
8-2=6
x=5,5
5,5-2=3,5
x=-2
-2-2=-4
Zadanie 3
Prawda
Fałsz
Zadanie 4
a) 3x+4
3*(-3)+4=-9+4=5
b) -8-2y
-8-2*4=-8-8=-16
c) 2x+3y-6
2*(-4)+3*3-6=-8+9-6=-5
d)
zadanie 1
a) 6x+3
6*7+3 = 42+3=45
b) 5y+10
5*(-4)+10 = -20+10=-10
c) 7(9-n)
7(9-0)=63-7=56
d) 6-10p
6-10*1/5=6-2=4
Zadanie 2
x=8
8-2=6
x=5,5
5,5-2=3,5
x=-2
-2-2=-4
Zadanie 3
Prawda
Fałsz
Zadanie 4
a) 3x+4
3*(-3)+4=-9+4=5
b) -8-2y
-8-2*4=-8-8=-16
c) 2x+3y-6
2*(-4)+3*3-6=-8+9-6=-5
d) \frac{1}{5} a(a-3)
5
1
a(a−3)
\frac{1}{5} a(a-3)=\frac{1}{5} *15(15-3)=\frac{1}{5} *225-45=45-45=0
5
1
a(a−3)=
5
1
∗15(15−3)=
5
1
∗225−45=45−45=0