Rozwiążcie mi ten przykład metodą podstawiania :
x+y=20
2x+3y=52
Z góry dziękuje ;-)
y=20-x
3*(20-x)+2x=52
60-3x+2x=52
8=x
y=20-8
x=8
y=12
x + y = 20 //•2
2x + 3y = 52
2x + 2y = 40
x = 12
y = 8
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x+y=20
2x+3y=52
y=20-x
3*(20-x)+2x=52
y=20-x
60-3x+2x=52
y=20-x
8=x
y=20-8
x=8
y=12
x=8
x + y = 20 //•2
2x + 3y = 52
2x + 2y = 40
2x + 3y = 52
x = 12
y = 8