Zadanie w załaczniku.
Polecenie :Rozwiąrz
daje naj
a)
2x-y=5
-y=5-2x |*(-1)
y=2x-5
b) ⅓y = x-3 | *3
y=3x-9
c) 3(x-y)=2x | :3
x-y= ⅔x
-y = ⅔x-x
-y= -⅓x |*(-1)
y = ⅓*x
d) ⅔x=¾y
¾y=⅔x | *⁴/₃
y= ²/₃*⁴/₃*x
y= ⁸/₉*x
e) 4x+2y=1
2y=1-4x | :2
y= ½-2x
f) 6x -⅔y=2
-⅔y = 2-6x |*(-³/₂)
y = 2*(-³/₂)-6*(-³/₂)*x
y= -3 + 9x
y=9x-3
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a)
2x-y=5
-y=5-2x |*(-1)
y=2x-5
b) ⅓y = x-3 | *3
y=3x-9
c) 3(x-y)=2x | :3
x-y= ⅔x
-y = ⅔x-x
-y= -⅓x |*(-1)
y = ⅓*x
d) ⅔x=¾y
¾y=⅔x | *⁴/₃
y= ²/₃*⁴/₃*x
y= ⁸/₉*x
e) 4x+2y=1
2y=1-4x | :2
y= ½-2x
f) 6x -⅔y=2
-⅔y = 2-6x |*(-³/₂)
y = 2*(-³/₂)-6*(-³/₂)*x
y= -3 + 9x
y=9x-3