Resolva os sistemas:
a)
x + 3y = 10
x - 9y = -14
3y + 9y = 10 + 14
12y = 24
y = 2
x + 6 = 10
x = 4
S = (4, 2)
b) x + y = 5
- x + 2y = 4
3y = 9
y = 3
x + 3 = 5
x = 2
S = (2, 3)
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Resolva os sistemas:
a)
x + 3y = 10
x - 9y = -14
3y + 9y = 10 + 14
12y = 24
y = 2
x + 6 = 10
x = 4
S = (4, 2)
b) x + y = 5
- x + 2y = 4
3y = 9
y = 3
x + 3 = 5
x = 2
S = (2, 3)