Question

Resolva os sistemas:
A- {3x+y=0
{11x-y=42

B- {x+3y=5
{2x-y= -4

C- {3x+3y=21
{2x-y=5

D- {x-y=3
{2×+3y=16

E- {5×+y=5
{10x-2y= -2

F- {5x-y=4
{2x-y=-5

G- {4x-y=2
{3x+2y=7

Me ajudeeeeeem por favor, obrigada msm ❤

Answer 1

a) 14x=42 3x+y=0
x=42 3.3+y=0
14 9+y=0
[x=3] [y= -9]
b)