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jwiiwjwkwkksk
@jwiiwjwkwkksk
July 2022
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Решите системы уравнений способом сложения:
1) { 5х+y=20
{ 2x-y=1
2) {2х-3y=9
{4x+3y=27
Найдите решения систем уравнений способом сложения:
1) {7x+2y=9
{5x+2y=11
2) {9x-2y=-17
{x-2y=7
Даю 21 балл!
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