Linear Equation

Write a program that solves a simple linear equation.

The first line contains an integer $P$ ($1 \le P \le 100$), the number of data sets. Each of the next $P$ lines contains one linear equation. Every equation consists of ax, a single space, the sign +, a single space, b, a single space, the sign =, a single space, and c, in that order:

ax + b = c

Here $x$ is the variable, and $a$, $b$, $c$ are non-negative integers ($0 \le a, b, c \le 10^9$). The coefficient $a$ is always written as a number, even when it is $0$ or $1$.

For each data set, print two lines. The first line is Equation n, where $n$ is the number of the data set, starting from 1. The second line is the answer:

• If the equation has no solution, print No solution..
• If the equation has infinitely many solutions, print More than one solution..
• If the equation has exactly one solution, print x = followed by the solution truncated to six digits after the decimal point. Truncation is toward zero: drop every digit of the absolute value after the sixth decimal place, then put - in front if the solution is negative. If the truncated value is $0$, print x = 0.000000 with no sign. Always print exactly six digits after the decimal point.

Print a blank line after the output of each data set.