I'm the saddest person in the world​

Identify the translation rule on a coordinate plane that verifies that square a(-4, 3), b(-4, 8), c(-9, 3), d(-9, 8) and square a'(-3, 2), b'(-3, 7), c'(-8, 2), d'(-8, 7) are congruent.

9/10 divide by -3/15 as a mixed number

Common binomial factor of 6x(3x+7)+5(3x+7)