Assuming you meant 5x-2y=20...
5x - 2(0) = 20
5x = 20
x = 4
X-intercept is 4
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5x - 2y = 20The x-intercept of a line is the point where its y-value is 0. When y=0, we get 5x = 20, or x=4. This means the coordinates of the x-intercept on this line are (4,0).
5x + (3y-x) + (10-2y) = 5x + 3y - x + 10 -2y = 5x - x + 3y - 2y + 10 = 4x + y +10
x + 2y = 10At the x-intercept, y=0:x = 10At the y-intercept, x=0 ==> 2y = 10y = 5
-x -2y = 6At the x-intercept, y = 0.-x = 6x = -6
2y = -6x + 8 The y intercept occurs when x = 0 2y = 8 therefore y = 4