Solve a linear equation ax + b = c for x. Enter the coefficient, constant, and right-hand side.
Solution (x)
—
Value of x.Usage Tip
Whatever you do to one side, do to the other: subtract b from both sides, then divide both by a.
THE MATH
ax + b = c → x = (c − b) ÷ a
Undo the constant, then undo the coefficient
Undo the constant, then undo the coefficient
A linear equation in one variable has a single solution when the coefficient of x is non-zero.
Solving means isolating x by reversing the operations.
Solving means isolating x by reversing the operations.
Enter a, b, and c for the equation ax + b = c.
If a is zero there is either no solution or infinitely many.
The check column substitutes the answer back in.
If a is zero there is either no solution or infinitely many.
The check column substitutes the answer back in.