a = $$a$$ = $$\frac{v-v0}{t}$$ = a$$\frac{v-v0}{t}$$ = $$a$$ (v-v0) = a* t$$(v-v0)$$ = $$a\cdot t$$
v-v0 = a* t$$v-v0$$ = $$a\cdot t$$
-v0 = a* t-v$$-v0$$ = $$a\cdot t-v$$
v0 = -( a* t-v)$$v0$$ = $$-(a\cdot t-v)$$
v0 = - a* t+v$$v0$$ = $$-a\cdot t+v$$