Show that if a, b, c, and m are integers such that m ≥ 2, c > 0, and a ≡ b (mod m), then ac ≡ bc (mod mc). rosen, kenneth. discrete mathematics and its applications (p. 259). mcgraw-hill higher education. kindle edition.

step-by-step explanation:

sry but any answer choices

probably .5

i can on others if necessary.

i'm assuming that it's c.)   volcanoes built the mountains and earthquakes tore them down.

given the equation is 8+9z=-6, the first step would be to subtract the 8 from both sides:

8+9z-8=-6-8

since 8 minus 8 = 0, this would cancel out the 8. and since -6 minus 8 equals -14, the equation would look like this

9z = -14