October 2018 1 17 Report

Proszę o pomoc .! Na jutro potrzebuję ;//

Rozwiąż układy równań:

1) {y=3 x+y=7

2) {x=2 x-y=1

3) {y-3 x-2y=8

4) {3x+y=12 x=2

5) {x=1 x+y=3

6) {x+y=5 y=3

7) {x=4 x-y=1

8) {2x=4 2x+y=7

9) {x+3y=10 3y=6

10) {3x-y=12 3x=15

11) {x+2y=8 2y=5

12) {5x-3y=10 3y=5

13) {x=9 2x+3y=21


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