y equals 3
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10-y=2y+3 10-3=2y+y 7=3y 7/3=y
7+2y=15subtract 7 from each side of the equal sign2y=8divide each side by 2y=4
This means that 2y - 3 = 2y + 4 which is not possible.
Therefore, y = 4 7 + 2y = 15 7-7 + 2y = 15-7 Subtract 7 from both sides 2y = 8 Divide by 2 to get y alone 2y/2 = 8/2 y = 4
5x+2y = 30 2y = -5x+30 y = -2.5x+15 Therfore the slope is 2.5 and y the intercept is 15.