Question

5 less than three times a number is 10

Answer 1

5−3n=10

Simplify

5+−3n=10

−3n+5=10

Subtract 5 from both sides.

−3n+5−5=10−5

−3n=5

Divide both sides by -3.

−3n−3=5−3

n=−5/3

Answer 2

$x-the\ number\\\\3x-5=10\ \ \ \ |add\ 5\ to\ both\ sides\\\\3x-5+5=10+5\\\\3x=15\ \ \ \ |divide\ both\ sides\ by\ 3\\\\\frac{3x}{3}=\frac{15}{3}\\\\\huge\boxed{x=5}\\\\check:\\3x-5=3(5)-5=15-5=10\ \ \ correct\ :)$