Solve the following equation using craner's Ruk
x+y - 2z=1, 2x-7z=3, x+y-2=5.​

Mrs. morton has a special reward system for her class. when all her students behave well, she rewards them by putting 3 marbles into a marble jar. when the jar has 100 or more marbles, the students have a party. right now, the the jar has 24 marbles. how could mrs. morton reward the class in order for the students to have a party?

Find the value of p for which the polynomial 3x^3 -x^2 + px +1 is exactly divisible by x-1, hence factorise the polynomial

Which inequality is equivalent to -3x < -12? x < 4 , x < -4 , x > 4, x > -4