Solve the Equation $7 \mathrm{x}-1=42$ A) $\{1.921\}$ B) $\{6.273\}$ C) $\{3.921\}$ D) $\{2.921\}$

Multiple Choice

Solve the equation. Give the solution to three decimal places.
- $7 \mathrm{x}-1=42$

A) $\{1.921\}$
B) $\{6.273\}$
C) $\{3.921\}$
D) $\{2.921\}$