Question 139885
what is the answer to this:
Let x = "a number"
: 
"the square root of the sum of a number and 7 is 8."
{{{sqrt(x+7)}}} = 8
:
x + 7 = 64; squared both sides
:
x = 64 - 7
:
x = 57
:
:
Check solution:
{{{sqrt(57+7)}}} = 8