How do you evaluate 9.7 + 3.1w - 1.99.7+3.1w−1.9 for w = 2.3? Algebra Expressions, Equations, and Functions PEMDAS 1 Answer NJ Jun 6, 2018 14.9314.93 Explanation: Simply substitute 2.32.3 wherever there is a ww in the expression 9.7 + 3.1w - 1.99.7+3.1w−1.9 = 9.7 + 3.1(2.3) - 1.9=9.7+3.1(2.3)−1.9 = 9.7 + 7.13 - 1.9=9.7+7.13−1.9 = 14.93=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)-83(7−2)−8? What are common mistakes students make with PEMDAS? How do you evaluate the expression 5[8+(3-1)]-25[8+(3−1)]−2? How do you simplify the expression 4(30-(3+1)^2)4(30−(3+1)2)? How do you evaluate the expression x^4+xx4+x if x=2? Is it okay to add first before subtracting in 4-6+34−6+3? How do you simplify (-3)^2+12*5(−3)2+12⋅5? How do you simplify (4-2)^3-4*8+21div3(4−2)3−4⋅8+21÷3? See all questions in PEMDAS Impact of this question 2226 views around the world You can reuse this answer Creative Commons License