How do you simplify the expression #13+(-12)-(-15)#? Algebra Expressions, Equations, and Functions PEMDAS 1 Answer Nabil A. Sep 13, 2015 16 Explanation: 13 + ( -12) - (-15) = 13 - 12 + 15 = 16 Answer link Related questions What is PEMDAS? How do you use PEMDAS? How do you use order of operations to simplify #3(7-2)-8#? What are common mistakes students make with PEMDAS? How do you evaluate the expression #5[8+(3-1)]-2#? How do you simplify the expression #4(30-(3+1)^2)#? How do you evaluate the expression #x^4+x# if x=2? Is it okay to add first before subtracting in #4-6+3#? How do you simplify #(-3)^2+12*5#? How do you simplify #(4-2)^3-4*8+21div3#? See all questions in PEMDAS Impact of this question 1874 views around the world You can reuse this answer Creative Commons License