rozwiąż równania i sprawdź a) x -7 = -2 b) -2 -y =10
prosze szybko
a) x -7 = -2 | + 7
x = 5
5 -7 = -2
-2 = -2
b) -2 -y =10 |+2
-y = 12 | * (-1)
y = -12
-2 - ( -12 ) = 10
-2 + 12 = 10
10 = 10
a) x -7 = -2
x=-2+7
x=5
spr. L=5-7=-2; P=-2------> L=P
b) -2 -y =10
-y=10+2
-y=12
y=-12
spr. P=10; L=-2-(-12)=-2+12=10 ------->L=P
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a) x -7 = -2 | + 7
x = 5
5 -7 = -2
-2 = -2
b) -2 -y =10 |+2
-y = 12 | * (-1)
y = -12
-2 - ( -12 ) = 10
-2 + 12 = 10
10 = 10
a) x -7 = -2
x=-2+7
x=5
spr. L=5-7=-2; P=-2------> L=P
b) -2 -y =10
-y=10+2
-y=12
y=-12
spr. P=10; L=-2-(-12)=-2+12=10 ------->L=P