Question

6x+5y=3021
x+y=513
Qual é a resposta desse sistema?

Answer 1

Boa noite.
6x+5y=3021
X+y=513 equivale y=513-x
6x+5(513-x)=3021
6x+2565-5x=3021
X=3021-2565
X=456
Y=513-456
Y=57
X= 456 y= 57

Answer 2

6x+5y=3021
x+y=513

x+5x+y+4y = 3021
x + y = 513

x+y+5x+4y = 3021
513+5x+4y = 3021
5x+4y = 3021-513
5x+4y = 2508
x+y = 513...*(-5)

-5x-5y = -2565
5x+4y = +2508
---------------------
......-y = -57 *(-1)
y = 57
x+y = 513
x+57 = 513
x = 513-57
x = 456

S: {456, 57}