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1,5:15=0,1
8*0,1=0,8kg
7*0,1=0,7kg
8x+7x=1,5
15x=1,5/:15
x=0,1
waga I chleba----8*0,1=0,8 kg
waga II chleba---7*0,1=0,7 kg
8y=7x/:8
x+y=1,5
y=7/8x
x+7/8x=1,5
y=7/8x
1 7/8x=1,5/*8/15
y=7/8x
x=3/2*8/15
y=7/8x
x=4/5
y=7/8*4/5
x=4/5
y=7/10