I need some explaining this is so unclear​

The multiplicative property of equality states that for real numbers a, b, c, and d, if a = b and c = d, then ac = bd. true false

Given: klmn is a parallelogram m? n=3m? k, lf ? kn , ld ? nm kf=2 cm, fn=4 cm find: lf, ld

If f(x) = 3x-2 and g(x) =2x+1 find (f-g)(x)