Răspuns:
r + gaste = 22
r+ gaini = 58
gaini + gaste = 60
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rate,gaste,gaini = ?
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2r + 2 gaste + 2 gaini = 140/ :2
r+gaste+gaini=70
=> rate = 70 - 60 = 10
gaini = 22 - 10 = 12
gaste= 58 - 10 = 48
cu plăcere!