Решите 2 уравнения: (7,3*х)-4,3-(2,8*х)=9,2 и (6,2*у)+2,9-(3,4*у)=8,5. - вопрос №233674427343289262293485 от annashiklo 21.11.2020 14:43

Question

Математика: Решите 2 уравнения: (7,3*х)-4,3-(2,8*х)=9,2 и (6,2*у)+2,9-(3,4*у)=8,5.

annashiklo · Answer

(7,3*х)-4,3-(2,8*х)=9,27.3*х-4.3-2.8*х=9.27.3*х-2.8*х=9.2+4.34.5*х=13.5х=3(6.2*у)+2.9-(3.4*у)=8.56.2*у+2.9-3.4у=8.56.2*у-3.4*у=8.5-2.92.8*у=5,6у=2...