twice the difference of a number and 5 equals 7. use the variable x for the unknown number. what is the equation​

Explain step-by-step how to simplify -5(2x – 3y + 6z – 10).

Abag contains 3 red marbles, 2 blue marbles, and 2 green marbles. one marble is picked, then another marble. assume that the selections are made with replacement. a) find the probability of picking two red marbles with replacement. b) find the probability of picking a red marble and a blue marble. assume the selections are made without replacement. c) find the probability of picking two red marbles without replacement. d) find the probability of picking a red marble and a blue marble without replacement.

Which steps could be part of the process in algebraically solving the system of equations, y+5x=x^2+10 and y=4x-10