What is the solution to the equation 7.5 - x = 2.8? x = 4.7
x = 5.7
x = 10.3
x = 5.3

assuming you mean addition: addition and subtraction are reverse operations.

step-by-step explanation:

x = ± 6i

step-by-step explanation:

x^2 = -36

take the square root of each side

sqrt(x^2) = sqrt(-36)

we know sqrt(ab) = sqrt(a) sqrt(b)

x = ±sqrt(36) sqrt(-1)

we know that sqrt (-1) = i

x = ± 6i