rozwiąż ukł równań metodą przeciwnych współczynników
x+4y=12
x+1/8y=4
x+4y=12 /×(-1)
x+⅛y=4
-x-4y=-12
-3⅞y=-8
y=-8:-³¹/₈
y=-8×(-⁸₃₁)
y=⁶⁴/₃₁=2²/₃₁
...................
x=12-4y=12-4×2²/₃₁=12-4×⁶⁴/₃₁=12-²⁵⁶/₃₁=³⁷²/₃₁-²⁵⁶/₃₁
x=¹¹⁶/₃₁
x=3²³/₃₁
.............
spr.
3²³/₃₁+4×2²/₃₁=12
¹¹⁶/₃₁+²⁵⁶/₃₁=12
³⁷²/₃₁=12
12=12
3²³/₃₁+⅛×2²/₃₁=4
¹¹⁶/₃₁+⁸/₃₁=4
¹²⁴/₃₁=4
4=4
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x+4y=12 /×(-1)
x+⅛y=4
-x-4y=-12
x+⅛y=4
-3⅞y=-8
y=-8:-³¹/₈
y=-8×(-⁸₃₁)
y=⁶⁴/₃₁=2²/₃₁
...................
x=12-4y=12-4×2²/₃₁=12-4×⁶⁴/₃₁=12-²⁵⁶/₃₁=³⁷²/₃₁-²⁵⁶/₃₁
x=¹¹⁶/₃₁
x=3²³/₃₁
.............
spr.
3²³/₃₁+4×2²/₃₁=12
¹¹⁶/₃₁+²⁵⁶/₃₁=12
³⁷²/₃₁=12
12=12
3²³/₃₁+⅛×2²/₃₁=4
¹¹⁶/₃₁+⁸/₃₁=4
¹²⁴/₃₁=4
4=4