Помогите пожалуйста,хотя бы один ♥
Решить систему уравнение методом поставновки:
y=3x
4x+3y=-10
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4x+y=1
-3x+4y=23
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3x-2y=-34
x=-5y
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x-3y=-5
-3x+5y=3
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