Question

Proszę Was o rozwiązanie układu równań

Answer 1

X+y/5 + y/5 = -2 / * 5
2x-y/3 - 3x/4 = 3/2 / * 12

x+y+y = -10
4(2x-y) - 3(3x) = 18

x = -10-2y
8x-4y-9x = 18

x = -10-2y
-x-4y = 18

x = -10-2y
-(-10-2y)-4y = 18

x = -10-2y
10+2y-4y = 18

x = -10-2y
-2y = 8 / -2

x = -10-2y
y = -4

x = -10-2(-4)
y = -4

x = -10+8
y = -4

x = -2
y = -4