Ошиблась не на тот предмет нажала.
решите функцию линейного уравнения.
1) 3x-2y+11=0 методом подстановки
x-4y-3=0

2) y=x+1 методом подстановки
5x+2y=16

3) y=15x-21 методом подстановки
y=7x-77

4) x-y=5 методом сложения.
x+y=7

ответ:

объяснение:

This year, on september 21-22, in the republic of mordovia of the city of saransk, the festival-competition “successful family of the volga region-2018” was held, which united 14 regions. for the first time this competition was held in conjunction with the festival “stars of childhood”. saratov region in the district competition "successful family of the volga region -2018" was represented by my family. the land of mordovia impressed me with its hospitality: on the border of saransk, a warm meeting was organized for our family by members of the folk group “ivushki” of the saransk music school with songs, “bread and salt”, and most importantly, with love, as the dearest guests! throughout the entire period of rehearsal, competitive and excursion events with us there was always an accompanying person who helped us in everything, starting with everyday issues and ending with help in preparing for competitive events. the competition itself was a big general concert program, in which there were neither winners nor losers. it was the triumph of love, family values ​​and the infinite joy of childhood! certainly not without excitement, because it is a huge responsibility to represent the whole region at such a large-scale event. all the contestants adequately coped with the task, but according to the unanimous opinion of the jury, our family was recognized as the “successful family of the volga region -2018” itself. we are very grateful to the members of the jury for such a high rating! preparation and participation in such events gives family members a lot: cohesion for a single purpose, reveals creative potential and optimizes the hidden reserves of each family member, gives a huge emotional charge and invaluable experience!