Which equation can replace 3x 5y = 59 in the original system and still produce the same solution? 2x - y = - 4 10x - 5y = - 20 7x = 39 13x = 39

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Mathematics

12 July, 02:59

Which equation can replace 3x 5y = 59 in the original system and still produce the same solution? 2x - y = - 4 10x - 5y = - 20 7x = 39 13x = 39

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Lincoln Acevedo · Answer 1

From my research, the original system of equations contain the following equations:

2x - y = - 4

3x + 5y = 59

where obtained solution is x = 3

Among the choices, it is easier to substitute 3x + 5y = 59 with one of the choices to see if they yield the same solution set. From trial-and-error, the equation that can replace the original equation is " 13x = 39 ". Among the choices, it is the 4th choice.