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Unfortunately the browser used for posting question is crap for mathematical questions because it rejects most mathematical symbols. As a result we can only see "solution to x y" - not enough to determine what equation was intended. I regret, therefore, that it is not possible to give a satisfactory answer. You could re-submit your question with any mathematical symbols (+ - * / = < etc) spelled out.
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Is x equals -1 is a solution of x plus y equals 4 x-y equals 6?
If for x = -1 we find the same value of y in both equations, then x = -1 will be a part of the solution of the system.Let's suppose that x = -1 is the x-coordinate of the solution of the given systemx + y = 4x - y = 6.x + y = 4-1 + y = 4-1 + 1 + y = 4 + 1y = 5x - y = 6-1 - y = 6-1 - 6 + y - y = 6 - 6 + y-7 = ySince we have two different values for y, we say that x = -1 is not a part of the solution for the given system.
How can x plus 1 equals 2y if y-1 equals x?
solution: y = 0 x = -1
How many solutions are in y equals -2x y equals 3x plus 5?
There is one solution for x and one solution for y. The solution is: x = -1 ; y = 2
Is (1 -1) a solution to x y?
If you mean: x+y = 1 then yes (0, 1) is a solution and the other is (1, 0) for the points of a straight line equation
If x-1 is a solution to the equation yx plus 5 what is the value of y?
If you mean y = x+5 and x is -1 then y = 4
