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Here are the steps to solve the equation... 5x - y= 10 subtract 5x to both sides;
- y = 10 - 5x multiply by -1 to both sides;
y = 5x - 10
Find the zero: y = 0
0 = 5x - 10 add 10 to both sides;
10 = 5x divide by 5 to both sides;
2 = x
Or you can graph y = 5x - 10 in a graphing calculator. Press 2ND, press TRACE, press 2 for zero, and with the left arrow go below of the intersection of the line with x-axis and press ENTER, with the right arrow go over that intersection and press ENTER, press ENTER again. The calculator displays: x = 2 and y = 0. The solution is x = 2.
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