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how to solve an x y equation. You can usually find the exact answer or if necessary a numerical answer to almost any accuracy you require. When we attempt to solve the absolute-value equation x 3 we are in effect setting two line equations equal to each other and finding where they cross.
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An example of a system of simultaneous equations is. Solving Equations Video Lesson Khan Academy Video. Plug in the x value in to the first equation to find out the y value.
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You can also find the x- intercept set y0 then solve for x. Plug x 3 into the equation x - 6y 4 to solve for y. Frac -y -1frac 4-x -1. Substitute x 2 for y in the 2nd equation.
