PLZ HELP PLZ HELP ME ASAP I WILL GIVE BRAINLIEST AND 50 PTS An expression is shown below: 6(m + 2 + 7m) Part A: Write two expressions that are equivalent to the given expression. (3 points) Part B: Show that one of your expressions in Part A is equivalent to the given expression using algebraic properties. Explain which properties you used. (4 points) Part C: Show that your other expression from Part A is equivalent to the given expression by substituting a number for m. (3 points)e two...