Q: What is the solution for the equation -x plus y equals 4 and the equation 2x plus y equals 4?

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It is a linear equation in x. The equation has the solution x = 0.

Yes, because the equation is linear, there is only one solution:4x - 3 = 12 +2x4x - 2x = 12 + 32x = 15x = 7.5There is no other solution

21

2x + 5 = 25 2x = 20x = 10

Yes.

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Not sure what you mean; that equation certainly has a solution.

2x + 3 = 72x = 4x = 2

It is a linear equation in x. The equation has the solution x = 0.

It does if x=2. That's the solution of your equation.

An equation, solution x = -10

X=2

2x + 4 = 8Subtract 4 from each side of the equation:2x = 4Divide each side by 2:x = 2

the answer is y minus 10 divided by 2.

It appears to be a simple linear equation in 'x'. But it has no solution. There is no numerical value for 'x' that can make it a true statement.

2x + 4 is an expression, not an equation. There can be no solution set for an expression.

The solution is (x, y, z) = (2.5, 1, 2.5).

-2x plus 3y equals 1