Question

Solve using the multiplication principle.
-6a = 42

Answer 1

Multiply both sides by \(\large -\frac{1}{6}\).

Answer 2

But whats the answer?

Answer 3

a= -7

Answer 4

\[\cancel{-6}a\cdot \cancel{\frac{-1}{6}}=42\cdot (-\cancel{\frac{1}{6})} \implies a=\frac{-42}{6}=-7.\]

Answer 5

Lol, there's no need for that last cancellation line.