Question

sistema

a+b+c=6
2a+3b=11
a+c=4

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Answer 1

Resposta:

{a + b + c = 6

{2a + 3b = 11

{a + c = 4

a + c = 4

a = 4 - c

a + b + c = 6

(4 - c) + b + c = 6

4 - c + b + c = 6

b = 6 - 4

b = 2

2a + 3b = 11

2a + 3.2 = 11

2a + 6 = 11

2a = 11 - 6

2a = 5

a = 5/2

a = 2,5

a + c = 4

2,5 + c = 4

c = 4 - 2,5

c = 1,5