x - donica
y - ziemia
x+y=56
y=7x
x+7x=56
8x=56
x=7 kg
y=7*7
y=49 kg
x+7x = 56kg
8x = 56kg |: 8
x = 7kg
7*7= 49kg
W donicy jest 49kg ziemi
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x - donica
y - ziemia
x+y=56
y=7x
x+7x=56
8x=56
x=7 kg
y=7*7
y=49 kg
x+7x = 56kg
8x = 56kg |: 8
x = 7kg
7*7= 49kg
W donicy jest 49kg ziemi