suma dwóch liczb jest równa -40, a ich różnica -16. jakie to liczby ?
x+y=-40
x-y=-16
x=-40-y
-40-y-y=-16
-2y=24
y=-12
x=-28
x- 1 liczba
y- 2 liczba
x + y = -40
x - y = -16
x = -40 - y
-40 - y - y = -16
-2y = 24/ :2
-y = 12
y= -12
x- (-12) = -16
x + 12 = -16
x = -28
x= -28
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x+y=-40
x-y=-16
x=-40-y
-40-y-y=-16
-2y=24
y=-12
x=-28
x- 1 liczba
y- 2 liczba
x + y = -40
x - y = -16
x = -40 - y
x - y = -16
-40 - y - y = -16
-2y = 24/ :2
-y = 12
y= -12
x - y = -16
x- (-12) = -16
x + 12 = -16
x = -28
x= -28
y= -12