Solve 7x-1 = 20

Solve linear, quadratic, cubic, radical, exponential, and logarithmic equations step by step.

Equation

Answer

x = 3

7x-1=20

Solve the equation by isolating x:

Step 1 — Add 1 to both sides

Move the constant −1 to the right side:

7x − 1 + 1 = 20 + 1

7x = 21

Step 2 — Divide both sides by 7

Isolate x by dividing both sides by the coefficient 7:

7x / 7 = 21 / 7

x = 3

How to solve 7x-1 = 20

To solve 7x-1 = 20, isolate x by performing inverse operations on both sides — first removing constants, then dividing by the coefficient of x. This gives x = 3.