Please help!! Will mark brainliest please explain

In a school 2/3 of the students study a language of those who study a language 2/5 study french

Simonne used the following steps to simplify the given expression. 12-3(-2x+4) step 1: 12+(-)+(-3)(4) step 2: 12+6x+(-12) step 3: 12+(-12)+6x step 4: 0+6x step 5: 6x what property of real numbers was used to transition from step 3 to step 4? •identity property of addition •inverse property of addition •associative property of addition •commutative property of addition

Which of the following sets represents mun? (2,5,8) (4,7) (3,4,6,7,9) {3,6,9