1.
(-2)-(-7)=
2-4=
(-3)-(-3)=
4-3=
5-7=
2+(-2)=
(-14)+11=
1-1=
5-5=
(-7)-(-3)=
(-7)+7=
(-2)-3=
(-6)-(-6)=
4+(-6)=
1-(-3)=
12-17=
(-5)+6=
(-2)-(-5)=
2.Różnica dwóch liczb jest ruwna 4 ,a suma tych liczb wynosi-2.zgadnij ,jakie to liczby
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(-2)-(-7)=-2+7=7-2=5
2-4=-2
(-3)-(-3)=-3+3=0
4-3=1
5-7=-2
2+(-2)=2-2=0
(-14)+11=-3
1-1=0
5-5=0
(-7)-(-3)=-7+3=-4
(-7)+7=7-7=0
(-2)-3=-2-3=-5
(-6)-(-6)=-6+6=0
4+(-6)=4-6=-2
1-(-3)=1+3=4
12-17=-5
(-5)+6=6-5=1
(-2)-(-5)=-2+5=5-2=3
2.Różnica dwóch liczb jest równa 4 ,a suma tych liczb wynosi-2.zgadnij ,jakie to liczby
x-y=4
x+y=-2
{x=4+y
{4+y+y=-2
{x=4+y
{2y=-2-4
{x=4+y
{2y=-6 /;2
{x=4+y
{y=-3
{x=4+(-3)=4-3=1
{y=-3
(-2)-(-7)=-2+7=5
2-4=-2
(-3)-(-3)=-3+3=0
4-3=1
5-7=-2
2+(-2)=2-2=0
(-14)+11=-3
1-1=0
5-5=0
(-7)-(-3)=-7+3=-4
(-7)+7=0
(-2)-3=-5
(-6)-(-6)=-6+6=0
4+(-6)=4-6=-2
1-(-3)=1+3=4
12-17=-5
(-5)+6=1
(-2)-(-5)=-2+5=3
2.
x-y=4/*(-1)
x+y=-2
-x+y=-4
x+y=-2
-x+y+x+y=(-4)+(-2)
2y=-6/:2
y=-3
x-y=4
x-(-3)=4
x=4+3
x=7
Myśle, że pomogłem :)