August 2021 0 10 Report
Помогите пожалуйста решить системы уравнений методом подстановки : 1) 3x+y=2
4x+2y=6


2) a+b=2
5a+2b=3


3)x-y=0
x-3y=6

4) 2x-5y=14
x+2y=1
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