How do you evaluate #9.7 + 3.1w - 1.9# for w = 2.3? Algebra Expressions, Equations, and Functions PEMDAS 1 Answer NJ Jun 6, 2018 #14.93# Explanation: Simply substitute #2.3# wherever there is a #w# in the expression #9.7 + 3.1w - 1.9# #= 9.7 + 3.1(2.3) - 1.9# #= 9.7 + 7.13 - 1.9# #= 14.93# 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 1916 views around the world You can reuse this answer Creative Commons License