Question

-3+3n=-7+2n show me how u got that answer

Answer 1

→ Chapter : Linear Equation of One Variable ←
≡ Solution:
⇒ $-3+3n=-7+2n$
⇒ $3n-2n=-7+3$
⇒ $\boxed{n=-4}$

Answer 2

-3+3n = -7+2n
-3+(3n-2n) = -7+(2n-2n)
since you subtracted 2n from both sides, 2n cancels out on the right side so you're left with
-3+n = -7
n = -7+3 = -4