solve -3x-3y=-15
y=±√15
8x = 2x + 15 6x = 15 x = 15/6 = 2.5
If: 20x+5y = 15 Then: y = -4x+3
5x - y = 55x - 3y = 15from the first equation:5x = 5 + y , substitute it in the second equation:5 + y - 3y = 155 -2y = 15-2y = 15 - 5-2y = 10y = -5Now,solve for x :5x = 5 +y5x = 5 -5 = zerox = zero
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y=±√15
2y = 15 y = 15/2 y = 7.5
x=15
-9
16
-0.5
Divide each side by -15 and x = - 6/15.
n - 15 = 86n = 86 + 15n = 101
Y=15/(2c+2x)
-3
8x = 2x + 15 6x = 15 x = 15/6 = 2.5
-21 = 9a - 15 - 3a -6 = 6a -1 = a