please solve the question.
no shorcuts.
answer with full explanation please.
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please solve the question.
no shorcuts.
answer with full explanation please.
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Put the value of y in equation (2)
Put the value of x in equation (1)
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Answer:
( -1,6 ; 0,6)
Step-by-step explanation:
{Х\2+у=0,8 (умножим на 2)
{7:(х+у\2)=10. ( по свойству пропорции)
{Х+2у=1,6 |*10,
{10х+5у=7. Вычтем из первого уравнения второе.
15у=9
У=3\5=0,6.
Х+2у=1,6 при у=0,6 имеем : Х+2*1,6=1,6 , х=-1,6 .
Ответ ( -1,6 ; 0,6)