Which value of x satisfies both 3x + y = 9 and 3x - 5y = 15?. A) / [/frac{ 10 }{ 3 }/]. B) / [/frac{ 2 }{ 3 }/]. C) / [-1/]. D) / [0/].

Question

Mathematics

Celeste Collins

20 July, 19:35

Which value of x satisfies both 3x + y = 9 and 3x - 5y = 15?. A) / [/frac{ 10 }{ 3 }/]. B) / [/frac{ 2 }{ 3 }/]. C) / [-1/]. D) / [0/].

+2

Answers (1)

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Nathalia Glass · Answer 1

Multiply the first equation by five to yield, 15x + 5y = 45. Add this equation to the second equation from the given,

15x + 5y = 45

+ 3x - 5y = 15

The answer would be 18x = 60. The value of x is 10/3. Therefore, the answer to this item is letter A.