Question

7th Grade Math
Please help
-7 = 1/3 a
Find the value of a

Answer 1

`\huge\boxed{a=-21}`

Explanation:

`-7=(1)/(3)a\to(1)/(3)a=-7\qquad|\text{multiply both sides by 3}\\\\3\!\!\!\!\diagup\cdot(1)/(3\!\!\!\!\diagup)a=(-7)(3)\\\\a=-21`