Rozwiąż układ równań :
a) x+y=360
0,9y=x+0,1y
b) 2x+3y=7,40
2*0,8x=3*1,05y=7,40-0,76
a)
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0,18y = 36/:0,18
y = 30,5
x + y = 360
x = 360-30,5
x = 329,5
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a)
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0,18y = 36/:0,18
y = 30,5
x + y = 360
x = 360-30,5
x = 329,5