Solve: 120 = 8x+56
Answer
x = 8
Try your own numbers
Step-by-Step Breakdown
- Expand and simplify the left-hand side: 120 = 120
- Expand and simplify the right-hand side: 8x+56 = 8x + 56
- Move every term to one side so the equation reads "...= 0": -8x + 64 = 0
- This is a linear equation of the form ax+b=0, with a=-8 and b=64.
- Solve for x: x = -b/a = -(64)/-8 = 8
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 120 = 8x+56?
x = 8.