3/5t -4 -7/10t = -2 (as you know 3/5 = 6/10) so
6/10t - 4 - 7/10t = -2
Simplify
-1/10t -4 = -2
add 4 to both sides
-1/10t - 4 + 4 = -2 + 4
-1/10t = 2
multiply -10 to both sides
-1/10t *(-10) = 2 * (-10)
Simplify
t = -20
Answer first one t = -20
For the first it should be 8x-12
And the second you would divide both by 5 and end up with n+5
Your answer is -8, tell me if you need help trying to figure these out.
sqrt (-1) = i the imaginary number
so the negative sqrt (-1) = -i
