Question

x1=40-10t x2=-30+5t чему равно t если x1=x2

Answer 1

$40-10t=-30+5t; \\ 40+30=10t+5t; \\ 70=15t; \\ t= \frac{70}{15} ; \\ t= 4\frac{2}{3}$

Answer 2

x1=x2

40-10t=-30+5t

-10t-5t=-30-40

-15t=-70

t=4,6