-Y + 10 = 25; first subtract 10 from each side of eq: -Y + 10 - 10 = 25 -10; and simplify:
-Y = 25 - 10 = 15; last, multiply each side by -1: -1*(-Y) = -1*15 --> Y = -15
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5n+15 = 25 5n = 25-15 5n = 10 n = 2
5n + 15 = 25 you subtract 15 from both sides then you get 10 then divided 5n by 10 you get 2n
x=-.25.
4a + a = 25 add 4a and a 5a = 25 then divide 25 by 5 a = 5
x = 25 / 3squared + 5