Solve: 1+3 = x-18
Answer
x = 22
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Step-by-Step Breakdown
- Expand and simplify the left-hand side: 1+3 = 4
- Expand and simplify the right-hand side: x-18 = x - 18
- Move every term to one side so the equation reads "...= 0": -x + 22 = 0
- This is a linear equation of the form ax+b=0, with a=-1 and b=22.
- Solve for x: x = -b/a = -(22)/-1 = 22
Theory & Definitions
A linear equation in one unknown can always be rearranged into the form ax+b=0 (a≠0), which has exactly one solution: x = -b/a.
Frequently Asked Questions
What is the solution to 1+3 = x-18?
x = 22.