Question

Resolva o sistema linear
A)4x+10y=18
2x+14y=10

B)-x-y=-5
3x+7y=16

Answer 1

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Ola Eduardo

A)

2x + 5y = 9
x + 7y = 5
2x + 14y = 10

9y = 1
y = 1/9

x + 7/9 = 45/9 
x = 38/9 

B) 

x + y = 5
3x + 7y = 16
7x + 7y = 35
4x = 19
x = 19/4

19/4 + y = 20/4
y = 1/4

pronto