Question

Resolver las sigientes ecuasiones 2x-3y=1x+2y=11

Answer 1

2x - 3y = 11
x + 2y = 11

x + 2y =11
x = 11 - 2y

2x - 3y = 11
2(11 - 2y) - 3y = 11
22 - 4y - 3y = 11
11 = 7y
11/7 = y

x = 11 - 2y
x = 11 - 2(11/7)
x = 11 - 22/7
x = (77 - 22)/7
x = 55/7