Question

mee ajuda....."precisa do cálculo"
resolva os sistemas

b)2x+y=270
3x+2y=460

c)x+y=10
x-y=6

e) y=2x
x-y=0

Answer 1

C){x+y=10
{x-y=6
2x=16
x=16
2
x=8
x+y=10
8+y=10
y=10-8
y=2

par ordenado
(8,2)