posted by Joy
The sum of 6.5 times u, 5 and -2. plus the product of 3.5 and x is equal to
the result of adding x, 4.5 times y and -10.
The sum of x and y plus the result of adding z and 8.5 equals 2 times x plus
-3 times y plus the result of multiplying 5 by u plus -7..
The result of adding 2, 2 times u and the product of -3 and u plus 8.5 times y
is equal to the sum of y and the product of -5.5 and u.