which expression is not equivilent to 8+(n-4)?

(8+n)-4

n+4

(8-4)+n

12+n

SmartMathMan Oct 14, 2018

#4**+2 **

A logical solution to why 12+n is the correct answer to the problem is by subsituting a number to the original expression, lets say we subsitute 4, the expression simplifies to 8. Then we can check for all the other 4 answer choices if their expressions simplify to 8. After deductive reasoning, we are able to pinpoint that 12+n does NOT simplify to 8, which is the solution to the problem.

CalculatorUser Oct 14, 2018