Solve the following equation for :?

0 ⤊

Solve the following equation for :?

{y+8}={8y+5}

where Y is a real number and there are allowed to be more than one solution.
{} refer to the radical/square root sign

2007-01-15 05:39:25 · 3 answers · asked by pirsimone 1 in Science & Mathematics ➔ Mathematics

3 answers

Square both sides:

y + 8 = 8y + 5
3 = 7y
y = 3/7

Double check:

sqrt(3/7 + 8) = sqrt(8(3/7) + 5)
sqrt(3/7 + 56/7) = sqrt(24/7 + 35/7)
sqrt(59/7) = sqrt(59/7)

2007-01-15 05:42:58 · answer #1 · answered by Jim Burnell 6 · 0⤊ 0⤋

squaring both sides
y+8=8y+5
-7y=-3
y=3/7

2007-01-15 05:47:09 · answer #2 · answered by raj 7 · 0⤊ 0⤋

well this is how i would do it
combine like terms
8y-y=8-5
7y=3
y=3/7

2007-01-15 05:52:33 · answer #3 · answered by Carolyne 1 · 0⤊ 0⤋