Problem
NT-B1-M04-P001 Simple Congruence
#1
★☆☆☆☆ Level 1 of 5
Solve \(x+3\equiv1\pmod7\).
Subtract \(3\) from both sides.
\(x\equiv1-3\equiv-2\equiv5\pmod7\).
Warm-up on writing an answer modulo a number.