If you mean: 4x+3y = -1 and x-3y = -34 then x = -7 and y = 9
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-5x + x + 9 = -4x + 12 -4x + 9 = -4x + 12 9 = 12 This equation has no solution.
Since there are two variables involved ... 'x' and 'y' ... a solution requires two equations. That's why the collection of equations is called a "system" of them. So far, in your question, you have supplied one equation. We eagerly await the arrival of the second one, so that we may begin working on the solution.
4x + 7 is an expression, not an equation. Only an equation (or an inequality) can have solutions, an expression cannot have a solution.
There is no solution yet, for x is an unknown. Once x is known, one can plug in the numbers. 4x-2=4x-2 because they are the exact same on both sides of the equal sign.
{-1,-2}